All the vulnerabilites related to GNU - GRUB2
Vulnerability from fkie_nvd
Published
2022-12-14 21:15
Modified
2024-11-21 07:01
Severity ?
Summary
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:21
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2024-02-06 18:15
Modified
2024-11-21 08:49
Severity ?
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | - | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| fedoraproject | fedora | 40 |
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Vulnerability from fkie_nvd
Published
2020-07-30 13:15
Modified
2024-11-21 04:55
Severity ?
Summary
A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:03
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2023-07-20 01:15
Modified
2024-11-21 06:57
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
7.0 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
7.0 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Summary
Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| security@ubuntu.com | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28734 | Third Party Advisory | |
| security@ubuntu.com | https://security.netapp.com/advisory/ntap-20230825-0002/ | Third Party Advisory | |
| security@ubuntu.com | https://www.openwall.com/lists/oss-security/2022/06/07/5 | Mailing List, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28734 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.netapp.com/advisory/ntap-20230825-0002/ | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.openwall.com/lists/oss-security/2022/06/07/5 | Mailing List, Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| netapp | active_iq_unified_manager | - |
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Vulnerability from fkie_nvd
Published
2023-07-20 01:15
Modified
2024-11-21 06:57
Severity ?
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
References
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Vulnerability from fkie_nvd
Published
2023-07-20 01:15
Modified
2024-11-21 06:57
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
References
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Vulnerability from fkie_nvd
Published
2020-07-31 22:15
Modified
2024-11-21 05:02
Severity ?
5.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Summary
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux_eus | 8.1 | |
| redhat | enterprise_linux_eus | 8.2 | |
| redhat | enterprise_linux_server_aus | 8.2 | |
| redhat | enterprise_linux_server_tus | 8.2 | |
| opensuse | leap | 15.1 | |
| opensuse | leap | 15.2 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 20.04 |
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Vulnerability from fkie_nvd
Published
2023-10-25 18:17
Modified
2024-11-21 08:35
Severity ?
5.3 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
4.6 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.6 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
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Vulnerability from fkie_nvd
Published
2015-12-16 21:59
Modified
2024-11-21 02:38
Severity ?
Summary
Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.
References
Impacted products
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{
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},
{
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"url": "http://www.securityfocus.com/archive/1/537115/100/0/threaded"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/79358"
},
{
"source": "cve@mitre.org",
"url": "http://www.securitytracker.com/id/1034422"
},
{
"source": "cve@mitre.org",
"url": "http://www.ubuntu.com/usn/USN-2836-1"
},
{
"source": "cve@mitre.org",
"url": "https://security.gentoo.org/glsa/201512-03"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
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{
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{
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
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},
{
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"url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
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},
{
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"tags": [
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},
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"url": "http://www.securityfocus.com/bid/79358"
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"url": "http://www.securitytracker.com/id/1034422"
},
{
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"url": "http://www.ubuntu.com/usn/USN-2836-1"
},
{
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"url": "https://security.gentoo.org/glsa/201512-03"
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],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-191"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
Vulnerability from fkie_nvd
Published
2020-07-29 18:15
Modified
2024-11-21 05:06
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux_atomic_host | - | |
| redhat | openshift_container_platform | 4.0 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 20.04 | |
| debian | debian_linux | 10.0 | |
| opensuse | leap | 15.1 | |
| opensuse | leap | 15.2 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| suse | suse_linux_enterprise_server | 11 | |
| suse | suse_linux_enterprise_server | 12 | |
| suse | suse_linux_enterprise_server | 15 | |
| microsoft | windows_10 | - | |
| microsoft | windows_10 | 1607 | |
| microsoft | windows_10 | 1709 | |
| microsoft | windows_10 | 1803 | |
| microsoft | windows_10 | 1809 | |
| microsoft | windows_10 | 1903 | |
| microsoft | windows_10 | 1909 | |
| microsoft | windows_10 | 2004 | |
| microsoft | windows_8.1 | - | |
| microsoft | windows_rt_8.1 | - | |
| microsoft | windows_server_2012 | - | |
| microsoft | windows_server_2012 | r2 | |
| microsoft | windows_server_2016 | - | |
| microsoft | windows_server_2016 | 1903 | |
| microsoft | windows_server_2016 | 1909 | |
| microsoft | windows_server_2016 | 2004 | |
| microsoft | windows_server_2019 | - |
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"cveTags": [],
"descriptions": [
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"value": "GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions."
},
{
"lang": "es",
"value": "GRUB2 presenta un fallo al comprobar la firma del kernel cuando se inicia directamente sin cu\u00f1a, permitiendo que el arranque seguro sea omitido. Esto solo afecta a los sistemas en los que el certificado de firma del kernel ha sido importado directamente a la base de datos de arranque seguro y la imagen de GRUB es iniciada directamente sin el uso de cu\u00f1a. Este problema afecta a GRUB2 versiones 2.04 y versiones anteriores"
}
],
"id": "CVE-2020-15705",
"lastModified": "2024-11-21T05:06:03.570",
"metrics": {
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{
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"baseSeverity": "MEDIUM",
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"baseScore": 4.4,
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"vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.4,
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"obtainAllPrivilege": false,
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"published": "2020-07-29T18:15:14.187",
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},
{
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"tags": [
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"url": "https://access.redhat.com/security/vulnerabilities/grub2bootloader"
},
{
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"tags": [
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"url": "https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html"
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{
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{
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{
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{
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Vulnerability from fkie_nvd
Published
2020-07-29 18:15
Modified
2024-11-21 05:06
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2023-07-20 01:15
Modified
2024-11-21 06:57
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
References
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2022-07-06 16:15
Modified
2024-11-21 06:22
Severity ?
Summary
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1991685 | Issue Tracking, Third Party Advisory | |
| secalert@redhat.com | https://security.gentoo.org/glsa/202209-12 | Third Party Advisory | |
| secalert@redhat.com | https://security.netapp.com/advisory/ntap-20220930-0001/ | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=1991685 | Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.gentoo.org/glsa/202209-12 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.netapp.com/advisory/ntap-20220930-0001/ | Third Party Advisory |
Impacted products
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Vulnerability from fkie_nvd
Published
2020-07-30 13:15
Modified
2024-11-21 05:02
Severity ?
Summary
There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.
References
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Vulnerability from fkie_nvd
Published
2024-01-15 11:15
Modified
2024-11-21 08:34
Severity ?
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | - | |
| redhat | enterprise_linux | 9.0 | |
| fedoraproject | fedora | 38 | |
| fedoraproject | fedora | 39 |
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Vulnerability from fkie_nvd
Published
2023-10-25 18:17
Modified
2024-11-21 08:35
Severity ?
7.5 (High) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:18
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:46
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2022-03-10 17:43
Modified
2024-11-21 06:23
Severity ?
Summary
A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| fedoraproject | fedora | 34 |
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Vulnerability from fkie_nvd
Published
2022-03-16 10:15
Modified
2024-11-21 06:34
Severity ?
5.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Summary
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| meissner@suse.de | https://bugzilla.suse.com/show_bug.cgi?id=1190474 | Exploit, Issue Tracking, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.suse.com/show_bug.cgi?id=1190474 | Exploit, Issue Tracking, Vendor Advisory |
Impacted products
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"baseScore": 4.4,
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]
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{
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],
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},
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}
Vulnerability from fkie_nvd
Published
2019-11-29 10:15
Modified
2024-11-21 04:27
Severity ?
Summary
A flaw was found in the grub2-set-bootflag utility of grub2. A local attacker could run this utility under resource pressure (for example by setting RLIMIT), causing grub2 configuration files to be truncated and leaving the system unbootable on subsequent reboots.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | http://www.openwall.com/lists/oss-security/2024/02/06/3 | ||
| secalert@redhat.com | https://access.redhat.com/errata/RHSA-2020:0335 | Third Party Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14865 | Issue Tracking, Third Party Advisory | |
| secalert@redhat.com | https://seclists.org/oss-sec/2019/q4/101 | Mailing List, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.openwall.com/lists/oss-security/2024/02/06/3 | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://access.redhat.com/errata/RHSA-2020:0335 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14865 | Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://seclists.org/oss-sec/2019/q4/101 | Mailing List, Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | - | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux_eus | 8.1 |
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Vulnerability from fkie_nvd
Published
2020-07-31 22:15
Modified
2024-11-21 05:02
Severity ?
5.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Summary
There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux_eus | 8.1 | |
| redhat | enterprise_linux_eus | 8.2 | |
| redhat | enterprise_linux_server_aus | 8.2 | |
| redhat | enterprise_linux_server_tus | 8.2 | |
| opensuse | leap | 15.1 | |
| opensuse | leap | 15.2 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 20.04 |
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:46
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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Vulnerability from fkie_nvd
Published
2022-12-19 20:15
Modified
2024-11-21 07:20
Severity ?
Summary
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux | 8.0 |
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Vulnerability from fkie_nvd
Published
2022-07-06 16:15
Modified
2024-11-21 06:22
Severity ?
Summary
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1991686 | Issue Tracking, Third Party Advisory | |
| secalert@redhat.com | https://security.gentoo.org/glsa/202209-12 | Third Party Advisory | |
| secalert@redhat.com | https://security.netapp.com/advisory/ntap-20220930-0001/ | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=1991686 | Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.gentoo.org/glsa/202209-12 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.netapp.com/advisory/ntap-20220930-0001/ | Third Party Advisory |
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Vulnerability from fkie_nvd
Published
2022-07-06 16:15
Modified
2024-11-21 06:22
Severity ?
Summary
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1991687 | Issue Tracking, Third Party Advisory | |
| secalert@redhat.com | https://security.gentoo.org/glsa/202209-12 | Third Party Advisory | |
| secalert@redhat.com | https://security.netapp.com/advisory/ntap-20220930-0001/ | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=1991687 | Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.gentoo.org/glsa/202209-12 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.netapp.com/advisory/ntap-20220930-0001/ | Third Party Advisory |
Impacted products
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Vulnerability from fkie_nvd
Published
2020-07-29 18:15
Modified
2024-11-21 05:06
Severity ?
5.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | enterprise_linux_atomic_host | - | |
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| microsoft | windows_10 | - | |
| microsoft | windows_10 | 1607 | |
| microsoft | windows_10 | 1709 | |
| microsoft | windows_10 | 1803 | |
| microsoft | windows_10 | 1809 | |
| microsoft | windows_10 | 1903 | |
| microsoft | windows_10 | 1909 | |
| microsoft | windows_10 | 2004 | |
| microsoft | windows_8.1 | - | |
| microsoft | windows_rt_8.1 | - | |
| microsoft | windows_server_2012 | - | |
| microsoft | windows_server_2012 | r2 | |
| microsoft | windows_server_2016 | - | |
| microsoft | windows_server_2016 | 1903 | |
| microsoft | windows_server_2016 | 1909 | |
| microsoft | windows_server_2016 | 2004 | |
| microsoft | windows_server_2019 | - | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 20.04 | |
| debian | debian_linux | 10.0 | |
| opensuse | leap | 15.1 | |
| opensuse | leap | 15.2 | |
| suse | suse_linux_enterprise_server | 11 | |
| suse | suse_linux_enterprise_server | 12 | |
| suse | suse_linux_enterprise_server | 15 | |
| netapp | active_iq_unified_manager | * |
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"type": "Secondary"
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{
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{
"lang": "en",
"value": "CWE-190"
},
{
"lang": "en",
"value": "CWE-362"
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"source": "nvd@nist.gov",
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]
}
Vulnerability from fkie_nvd
Published
2020-07-29 20:15
Modified
2024-11-21 05:02
Severity ?
Summary
In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.
References
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Vulnerability from fkie_nvd
Published
2021-03-15 22:15
Modified
2024-11-21 06:21
Severity ?
Summary
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1933757 | Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=1933757 | Issue Tracking, Third Party Advisory |
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Vulnerability from fkie_nvd
Published
2021-03-03 17:15
Modified
2024-11-21 05:21
Severity ?
Summary
A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
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cve-2021-3418
Vulnerability from cvelistv5
Published
2021-03-15 21:17
Modified
2024-08-03 16:53
Severity ?
EPSS score ?
Summary
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
References
| ▼ | URL | Tags |
|---|---|---|
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cve-2021-3697
Vulnerability from cvelistv5
Published
2022-07-06 15:06
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
Summary
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991687 | x_refsource_MISC | |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220930-0001/ | x_refsource_CONFIRM |
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cve-2020-15707
Vulnerability from cvelistv5
Published
2020-07-29 17:45
Modified
2024-09-17 03:07
Severity ?
EPSS score ?
Summary
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | Ubuntu | grub2 in Ubuntu |
Version: 20.04 LTS < 2.04-1ubuntu26.1 Version: 18.04 LTS < 2.02-2ubuntu8.16 Version: 16.04 LTS < 2.02~beta2-36ubuntu3.26 Version: 14.04 ESM < 2.02~beta2-9ubuntu1.20 |
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cve-2023-4692
Vulnerability from cvelistv5
Published
2023-10-25 10:27
Modified
2024-11-23 03:30
Severity ?
EPSS score ?
Summary
An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.
References
| ▼ | URL | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2024:2456 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2024:3184 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2023-4692 | vdb-entry, x_refsource_REDHAT | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2236613 | issue-tracking, x_refsource_REDHAT | |
| https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/ | ||
| https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html | ||
| https://seclists.org/oss-sec/2023/q4/37 |
Impacted products
| Vendor | Product | Version | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▼ |
Patch: 2.12 |
||||||||||||||
|
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cve-2024-1048
Vulnerability from cvelistv5
Published
2024-02-06 17:30
Modified
2024-11-23 03:30
Severity ?
EPSS score ?
Summary
A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.
References
| ▼ | URL | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2024:2456 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2024:3184 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2024-1048 | vdb-entry, x_refsource_REDHAT | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2256827 | issue-tracking, x_refsource_REDHAT | |
| https://www.openwall.com/lists/oss-security/2024/02/06/3 |
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▼ | |||||||||||||||||||
|
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cve-2021-20233
Vulnerability from cvelistv5
Published
2021-03-03 16:44
Modified
2024-08-03 17:37
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1926263 | x_refsource_MISC | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | vendor-advisory, x_refsource_FEDORA | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220325-0001/ | x_refsource_CONFIRM |
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cve-2021-3696
Vulnerability from cvelistv5
Published
2022-07-06 15:06
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
Summary
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991686 | x_refsource_MISC | |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220930-0001/ | x_refsource_CONFIRM |
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cve-2022-28734
Vulnerability from cvelistv5
Published
2023-07-20 00:22
Modified
2024-08-03 06:03
Severity ?
EPSS score ?
Summary
Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | GNU Project | GNU GRUB |
Version: 0 ≤ |
|
|
|||
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cve-2020-10713
Vulnerability from cvelistv5
Published
2020-07-30 12:58
Modified
2024-08-04 11:14
Severity ?
EPSS score ?
Summary
A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
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cve-2020-25632
Vulnerability from cvelistv5
Published
2021-03-03 16:40
Modified
2024-08-04 15:40
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1879577 | x_refsource_MISC | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | vendor-advisory, x_refsource_FEDORA | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220325-0001/ | x_refsource_CONFIRM |
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cve-2020-14311
Vulnerability from cvelistv5
Published
2020-07-31 20:56
Modified
2024-08-04 12:39
Severity ?
EPSS score ?
Summary
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 | x_refsource_CONFIRM | |
| https://usn.ubuntu.com/4432-1/ | vendor-advisory, x_refsource_UBUNTU | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html | vendor-advisory, x_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html | vendor-advisory, x_refsource_SUSE | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| http://www.openwall.com/lists/oss-security/2021/09/17/2 | mailing-list, x_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2021/09/17/4 | mailing-list, x_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2021/09/21/1 | mailing-list, x_refsource_MLIST |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | The Grub2 Project | grub2 |
Version: 2.06 |
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cve-2021-3981
Vulnerability from cvelistv5
Published
2022-03-08 14:02
Modified
2024-08-03 17:09
Severity ?
EPSS score ?
Summary
A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.
References
| ▼ | URL | Tags |
|---|---|---|
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AI776L35DDYPCSAAJPJM3ZEQYSFZHBJX/ | vendor-advisory, x_refsource_FEDORA | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2024170 | x_refsource_MISC | |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisory, x_refsource_GENTOO | |
| http://www.openwall.com/lists/oss-security/2024/01/15/3 |
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cve-2020-14310
Vulnerability from cvelistv5
Published
2020-07-31 20:55
Modified
2024-08-04 12:39
Severity ?
EPSS score ?
Summary
There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14310 | x_refsource_CONFIRM | |
| https://usn.ubuntu.com/4432-1/ | vendor-advisory, x_refsource_UBUNTU | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html | vendor-advisory, x_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html | vendor-advisory, x_refsource_SUSE | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | The Grub2 Project | grub2 |
Version: 2.06 |
|
|
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cve-2023-4693
Vulnerability from cvelistv5
Published
2023-10-25 10:27
Modified
2024-11-23 03:30
Severity ?
EPSS score ?
Summary
An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
References
| ▼ | URL | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2024:2456 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2024:3184 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2023-4693 | vdb-entry, x_refsource_REDHAT | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2238343 | issue-tracking, x_refsource_REDHAT | |
| https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/ | ||
| https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html | ||
| https://seclists.org/oss-sec/2023/q4/37 |
Impacted products
| Vendor | Product | Version | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ▼ | Red Hat | Red Hat Enterprise Linux 8 |
Unaffected: 1:2.02-156.el8 < * cpe:/o:redhat:enterprise_linux:8::baseos |
||||||||
|
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cve-2020-14309
Vulnerability from cvelistv5
Published
2020-07-30 12:49
Modified
2024-08-04 12:39
Severity ?
EPSS score ?
Summary
There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1852022 | x_refsource_MISC | |
| https://security.netapp.com/advisory/ntap-20200731-0008/ | x_refsource_CONFIRM | |
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cve-2019-14865
Vulnerability from cvelistv5
Published
2019-11-29 09:50
Modified
2024-08-05 00:26
Severity ?
EPSS score ?
Summary
A flaw was found in the grub2-set-bootflag utility of grub2. A local attacker could run this utility under resource pressure (for example by setting RLIMIT), causing grub2 configuration files to be truncated and leaving the system unbootable on subsequent reboots.
References
| ▼ | URL | Tags |
|---|---|---|
| https://seclists.org/oss-sec/2019/q4/101 | x_refsource_MISC | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14865 | x_refsource_CONFIRM | |
| https://access.redhat.com/errata/RHSA-2020:0335 | vendor-advisory, x_refsource_REDHAT | |
| http://www.openwall.com/lists/oss-security/2024/02/06/3 |
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cve-2020-15705
Vulnerability from cvelistv5
Published
2020-07-29 17:45
Modified
2024-09-17 00:06
Severity ?
EPSS score ?
Summary
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | Ubuntu | grub2 in Ubuntu |
Version: 20.04 LTS < 2.04-1ubuntu26.1 Version: 18.04 LTS < 2.02-2ubuntu8.16 Version: 16.04 LTS < 2.02~beta2-36ubuntu3.26 Version: 14.04 ESM < 2.02~beta2-9ubuntu1.20 |
|
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cve-2015-8370
Vulnerability from cvelistv5
Published
2015-12-16 00:00
Modified
2024-10-21 16:51
Severity ?
EPSS score ?
Summary
Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.
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cve-2022-28735
Vulnerability from cvelistv5
Published
2023-07-20 00:22
Modified
2024-10-24 19:20
Severity ?
EPSS score ?
Summary
The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | GNU Project | GNU GRUB |
Version: 0 ≤ |
|
|
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cve-2021-3695
Vulnerability from cvelistv5
Published
2022-07-06 15:06
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
Summary
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991685 | x_refsource_MISC | |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220930-0001/ | x_refsource_CONFIRM |
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cve-2023-4001
Vulnerability from cvelistv5
Published
2024-01-15 11:10
Modified
2024-11-24 11:54
Severity ?
EPSS score ?
Summary
An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.
References
| ▼ | URL | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2024:0437 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2024:0456 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2024:0468 | vendor-advisory, x_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2023-4001 | vdb-entry, x_refsource_REDHAT | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2224951 | issue-tracking, x_refsource_REDHAT | |
| https://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/ |
Impacted products
| Vendor | Product | Version | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ▼ | Red Hat | Red Hat Enterprise Linux 9 |
Unaffected: 1:2.06-70.el9_3.2 < * cpe:/o:redhat:enterprise_linux:9::baseos |
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cve-2021-46705
Vulnerability from cvelistv5
Published
2022-03-16 09:50
Modified
2024-09-16 19:46
Severity ?
EPSS score ?
Summary
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1190474 | x_refsource_CONFIRM |
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | SUSE | SUSE Linux Enterprise Server 15 SP4 |
Version: grub2 < 2.06-150400.7.1 |
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cve-2022-3775
Vulnerability from cvelistv5
Published
2022-12-19 00:00
Modified
2024-08-03 01:20
Severity ?
EPSS score ?
Summary
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
References
| ▼ | URL | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/cve-2022-3775 | ||
| https://security.gentoo.org/glsa/202311-14 | vendor-advisory |
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cve-2022-2601
Vulnerability from cvelistv5
Published
2022-12-14 00:00
Modified
2024-08-22 01:13
Severity ?
EPSS score ?
Summary
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
References
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cve-2020-14308
Vulnerability from cvelistv5
Published
2020-07-29 19:03
Modified
2024-08-04 12:39
Severity ?
EPSS score ?
Summary
In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1852009 | x_refsource_MISC | |
| http://www.openwall.com/lists/oss-security/2020/07/29/3 | mailing-list, x_refsource_MLIST | |
| https://security.netapp.com/advisory/ntap-20200731-0008/ | x_refsource_CONFIRM | |
| https://usn.ubuntu.com/4432-1/ | vendor-advisory, x_refsource_UBUNTU | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html | vendor-advisory, x_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html | vendor-advisory, x_refsource_SUSE | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| http://www.openwall.com/lists/oss-security/2021/09/17/2 | mailing-list, x_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2021/09/17/4 | mailing-list, x_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2021/09/21/1 | mailing-list, x_refsource_MLIST |
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cve-2022-28733
Vulnerability from cvelistv5
Published
2023-07-20 00:20
Modified
2024-10-24 19:49
Severity ?
EPSS score ?
Summary
Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | GNU Project | GNU GRUB |
Version: 0 ≤ |
|
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cve-2020-27779
Vulnerability from cvelistv5
Published
2021-03-03 16:40
Modified
2024-08-04 16:25
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1900698 | x_refsource_MISC | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | vendor-advisory, x_refsource_FEDORA | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220325-0001/ | x_refsource_CONFIRM |
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cve-2024-56737
Vulnerability from cvelistv5
Published
2024-12-29 00:00
Modified
2024-12-31 18:17
Severity ?
EPSS score ?
Summary
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
References
| ▼ | URL | Tags |
|---|---|---|
| https://savannah.gnu.org/bugs/?66599 |
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cve-2020-14372
Vulnerability from cvelistv5
Published
2021-03-03 16:40
Modified
2024-08-04 12:46
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1873150 | x_refsource_MISC | |
| https://access.redhat.com/security/vulnerabilities/RHSB-2021-003 | x_refsource_MISC | |
| https://security.netapp.com/advisory/ntap-20210416-0004/ | x_refsource_CONFIRM | |
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| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO |
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cve-2022-28736
Vulnerability from cvelistv5
Published
2023-07-20 00:23
Modified
2024-10-24 18:53
Severity ?
EPSS score ?
Summary
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | GNU Project | GNU GRUB |
Version: 0 ≤ |
|
|
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cve-2020-27749
Vulnerability from cvelistv5
Published
2021-03-03 16:40
Modified
2024-08-04 16:18
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
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|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1899966 | x_refsource_MISC | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | vendor-advisory, x_refsource_FEDORA | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220325-0001/ | x_refsource_CONFIRM |
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cve-2024-56738
Vulnerability from cvelistv5
Published
2024-12-29 00:00
Modified
2024-12-31 18:15
Severity ?
EPSS score ?
Summary
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
References
| ▼ | URL | Tags |
|---|---|---|
| https://savannah.gnu.org/bugs/?66603 |
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cve-2020-25647
Vulnerability from cvelistv5
Published
2021-03-03 16:40
Modified
2024-08-04 15:40
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
| ▼ | URL | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1886936 | x_refsource_MISC | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | vendor-advisory, x_refsource_FEDORA | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220325-0001/ | x_refsource_CONFIRM |
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cve-2021-20225
Vulnerability from cvelistv5
Published
2021-03-03 16:44
Modified
2024-08-03 17:30
Severity ?
EPSS score ?
Summary
A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
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|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1924696 | x_refsource_MISC | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | vendor-advisory, x_refsource_FEDORA | |
| https://security.gentoo.org/glsa/202104-05 | vendor-advisory, x_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20220325-0001/ | x_refsource_CONFIRM |
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cve-2020-15706
Vulnerability from cvelistv5
Published
2020-07-29 17:45
Modified
2024-09-16 22:20
Severity ?
EPSS score ?
Summary
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ▼ | Ubuntu | grub2 in Ubuntu |
Version: 20.04 LTS < 2.04-1ubuntu26.1 Version: 18.04 LTS < 2.02-2ubuntu8.16 Version: 16.04 LTS < 2.02~beta2-36ubuntu3.26 Version: 14.04 ESM < 2.02~beta2-9ubuntu1.20 |
|
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