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1870 vulnerabilities found for enterprise_linux_server_eus by redhat
FKIE_CVE-2021-3659
Vulnerability from fkie_nvd - Published: 2022-08-22 15:15 - Updated: 2024-11-21 06:22
Severity ?
Summary
A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.
References
| URL | Tags | ||
|---|---|---|---|
| secalert@redhat.com | https://access.redhat.com/security/cve/CVE-2021-3659 | Third Party Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1975949 | Issue Tracking, Patch, Third Party Advisory | |
| secalert@redhat.com | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8 | Patch, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://access.redhat.com/security/cve/CVE-2021-3659 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=1975949 | Issue Tracking, Patch, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8 | Patch, Vendor Advisory |
Impacted products
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FKIE_CVE-2021-3744
Vulnerability from fkie_nvd - Published: 2022-03-04 16:15 - Updated: 2024-11-21 06:22
Severity ?
Summary
A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.
References
Impacted products
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FKIE_CVE-2021-4034
Vulnerability from fkie_nvd - Published: 2022-01-28 20:15 - Updated: 2025-11-06 14:50
Severity ?
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
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
References
Impacted products
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"value": "Se encontr\u00f3 una vulnerabilidad de escalada de privilegios local en la utilidad pkexec de polkit. La aplicaci\u00f3n pkexec es una herramienta setuid dise\u00f1ada para permitir a usuarios sin privilegios ejecutar comandos como usuarios privilegiados de acuerdo con pol\u00edticas predefinidas. La versi\u00f3n actual de pkexec no maneja correctamente el recuento de par\u00e1metros de llamada y termina intentando ejecutar variables de entorno como comandos. Un atacante puede aprovechar esto creando variables de entorno de tal manera que induzcan a pkexec a ejecutar c\u00f3digo arbitrario. Cuando se ejecuta con \u00e9xito, el ataque puede provocar una escalada de privilegios locales otorgando a los usuarios sin privilegios derechos administrativos en la m\u00e1quina de destino."
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FKIE_CVE-2021-20233
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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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FKIE_CVE-2021-20225
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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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FKIE_CVE-2020-25632
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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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FKIE_CVE-2020-25647
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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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FKIE_CVE-2020-27779
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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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FKIE_CVE-2020-14372
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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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FKIE_CVE-2020-27749
Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 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-2021-3659 (GCVE-0-2021-3659)
Vulnerability from cvelistv5 – Published: 2022-08-22 14:49 – Updated: 2024-08-03 17:01
VLAI?
Summary
A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.
Severity ?
No CVSS data available.
CWE
- CWE-252 - - Unchecked Return Value, CWE-476 - NULL Pointer Dereference
Assigner
References
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CVE-2021-3744 (GCVE-0-2021-3744)
Vulnerability from cvelistv5 – Published: 2022-03-04 15:55 – Updated: 2024-08-03 17:01
VLAI?
Summary
A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2021-4034 (GCVE-0-2021-4034)
Vulnerability from cvelistv5 – Published: 2022-01-28 00:00 – Updated: 2025-10-21 23:15
VLAI?
Summary
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
Severity ?
7.8 (High)
CWE
- CWE-787 - (CWE-787|CWE-125)
Assigner
References
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CVE-2021-20233 (GCVE-0-2021-20233)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:44 – Updated: 2024-08-03 17:37
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2021-20225 (GCVE-0-2021-20225)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:44 – Updated: 2024-08-03 17:30
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||
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CVE-2020-25632 (GCVE-0-2020-25632)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:40 – Updated: 2024-08-04 15:40
VLAI?
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.
Severity ?
No CVSS data available.
CWE
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References
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CVE-2020-25647 (GCVE-0-2020-25647)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:40 – Updated: 2024-08-04 15:40
VLAI?
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.
Severity ?
No CVSS data available.
CWE
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References
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CVE-2020-14372 (GCVE-0-2020-14372)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:40 – Updated: 2024-08-04 12:46
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | ||||||||||||||||
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CVE-2020-27749 (GCVE-0-2020-27749)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:40 – Updated: 2024-08-04 16:18
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2020-27779 (GCVE-0-2020-27779)
Vulnerability from cvelistv5 – Published: 2021-03-03 16:40 – Updated: 2024-08-04 16:25
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-3659 (GCVE-0-2021-3659)
Vulnerability from nvd – Published: 2022-08-22 14:49 – Updated: 2024-08-03 17:01
VLAI?
Summary
A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.
Severity ?
No CVSS data available.
CWE
- CWE-252 - - Unchecked Return Value, CWE-476 - NULL Pointer Dereference
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2021-3744 (GCVE-0-2021-3744)
Vulnerability from nvd – Published: 2022-03-04 15:55 – Updated: 2024-08-03 17:01
VLAI?
Summary
A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2021-4034 (GCVE-0-2021-4034)
Vulnerability from nvd – Published: 2022-01-28 00:00 – Updated: 2025-10-21 23:15
VLAI?
Summary
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
Severity ?
7.8 (High)
CWE
- CWE-787 - (CWE-787|CWE-125)
Assigner
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CVE-2021-20233 (GCVE-0-2021-20233)
Vulnerability from nvd – Published: 2021-03-03 16:44 – Updated: 2024-08-03 17:37
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2021-20225 (GCVE-0-2021-20225)
Vulnerability from nvd – Published: 2021-03-03 16:44 – Updated: 2024-08-03 17:30
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
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| URL | Tags | |||||||||||||
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CVE-2020-25632 (GCVE-0-2020-25632)
Vulnerability from nvd – Published: 2021-03-03 16:40 – Updated: 2024-08-04 15:40
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
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CVE-2020-25647 (GCVE-0-2020-25647)
Vulnerability from nvd – Published: 2021-03-03 16:40 – Updated: 2024-08-04 15:40
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2020-14372 (GCVE-0-2020-14372)
Vulnerability from nvd – Published: 2021-03-03 16:40 – Updated: 2024-08-04 12:46
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-27749 (GCVE-0-2020-27749)
Vulnerability from nvd – Published: 2021-03-03 16:40 – Updated: 2024-08-04 16:18
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-27779 (GCVE-0-2020-27779)
Vulnerability from nvd – Published: 2021-03-03 16:40 – Updated: 2024-08-04 16:25
VLAI?
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.
Severity ?
No CVSS data available.
CWE
Assigner
References
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