gsd-2021-44142
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.
Aliases
Aliases
{
"GSD": {
"affected_component": " VFS module vfs_fruit",
"alias": "CVE-2021-44142",
"attack_vector": "network access",
"description": "To quote the Samba advisory: \n\n All versions of Samba prior to 4.13.17 are vulnerable to an out-of-bounds heap read write vulnerability that allows remote attackers to execute arbitrary code as root on affected Samba installations that use the VFS module vfs_fruit. \n\n The specific flaw exists within the parsing of EA metadata when opening files in smbd. Access as a user that has write access to a file\u0027s extended attributes is required to exploit this vulnerability. Note that this could be a guest or unauthenticated user if such users are allowed write access to file extended attributes. \n\n The problem in vfs_fruit exists in the default configuration of the fruit VFS module using fruit:metadata=netatalk or fruit:resource=file. If both options are set to different settings than the default values, the system is not affected by the security issue.",
"id": "GSD-2021-44142",
"impact": "code execution as root",
"notes": "",
"product_name": "Samba",
"product_version": "\u003c4.13.17",
"references": [
"https://www.samba.org/samba/security/CVE-2021-44142.html",
"https://access.redhat.com/security/cve/cve-2021-44142",
"https://ubuntu.com/security/CVE-2021-44142",
"https://ubuntu.com/security/notices/USN-5260-1",
"https://ubuntu.com/security/notices/USN-5260-2",
"https://www.synology.com/en-us/security/advisory/Synology_SA_22_02",
"https://support.f5.com/csp/article/K84695749",
"https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin",
"https://www.whitesourcesoftware.com/resources/blog/samba-vulnerability-cve-2021-44142/",
"https://www.theregister.com/2022/02/02/samba_vfs_fruit_vulnerability/",
"https://www.suse.com/security/cve/CVE-2021-44142.html",
"https://www.debian.org/security/2022/dsa-5071",
"https://access.redhat.com/errata/RHSA-2022:0664",
"https://access.redhat.com/errata/RHSA-2022:0663",
"https://access.redhat.com/errata/RHSA-2022:0458",
"https://access.redhat.com/errata/RHSA-2022:0457",
"https://access.redhat.com/errata/RHSA-2022:0332",
"https://access.redhat.com/errata/RHSA-2022:0331",
"https://access.redhat.com/errata/RHSA-2022:0330",
"https://access.redhat.com/errata/RHSA-2022:0329",
"https://access.redhat.com/errata/RHSA-2022:0328",
"https://advisories.mageia.org/CVE-2021-44142.html",
"https://security.archlinux.org/CVE-2021-44142",
"https://alas.aws.amazon.com/cve/html/CVE-2021-44142.html",
"https://linux.oracle.com/cve/CVE-2021-44142.html"
],
"reporter": "kurtseifried",
"reporter_id": 582211,
"vendor_name": "Samba",
"vulnerability_type": "out-of-bounds heap read write"
},
"OSV": {
"affected": [
{
"package": {
"ecosystem": "GSD",
"name": "Samba"
},
"versions": [
"\u003c4.13.17"
]
}
],
"alias": "CVE-2021-44142",
"details": "To quote the Samba advisory: \n\n All versions of Samba prior to 4.13.17 are vulnerable to an out-of-bounds heap read write vulnerability that allows remote attackers to execute arbitrary code as root on affected Samba installations that use the VFS module vfs_fruit. \n\n The specific flaw exists within the parsing of EA metadata when opening files in smbd. Access as a user that has write access to a file\u0027s extended attributes is required to exploit this vulnerability. Note that this could be a guest or unauthenticated user if such users are allowed write access to file extended attributes. \n\n The problem in vfs_fruit exists in the default configuration of the fruit VFS module using fruit:metadata=netatalk or fruit:resource=file. If both options are set to different settings than the default values, the system is not affected by the security issue.",
"id": "GSD-2021-44142",
"modified": "2022-02-01T23:00:11.123456Z",
"published": "2022-02-01T23:00:11.123456Z",
"references": [
{
"type": "VENDOR",
"url": "https://www.samba.org/samba/security/CVE-2021-44142.html"
},
{
"type": "VENDOR",
"url": "https://access.redhat.com/security/cve/cve-2021-44142"
},
{
"type": "VENDOR",
"url": "https://ubuntu.com/security/CVE-2021-44142"
},
{
"type": "VENDOR",
"url": "https://ubuntu.com/security/notices/USN-5260-1"
},
{
"type": "VENDOR",
"url": "https://ubuntu.com/security/notices/USN-5260-2"
},
{
"type": "VENDOR",
"url": "https://www.synology.com/en-us/security/advisory/Synology_SA_22_02"
},
{
"type": "VENDOR",
"url": "https://support.f5.com/csp/article/K84695749"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin"
},
{
"type": "WEB",
"url": "https://www.whitesourcesoftware.com/resources/blog/samba-vulnerability-cve-2021-44142/"
},
{
"type": "WEB",
"url": "https://www.theregister.com/2022/02/02/samba_vfs_fruit_vulnerability/"
}
],
"summary": "Remote code execution as root in Samba prior to version 4.13.17"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-44142"
],
"details": "The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide \"...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver.\" Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.",
"id": "GSD-2021-44142",
"modified": "2023-12-13T01:23:20.940899Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"DATE_PUBLIC": "2022-01-31T15:41:00.000Z",
"ID": "CVE-2021-44142",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Samba",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "4.13.17"
},
{
"version_affected": "\u003c",
"version_value": "4.14.12"
},
{
"version_affected": "\u003c",
"version_value": "4.15.5"
}
]
}
}
]
},
"vendor_name": "Samba"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide \"...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver.\" Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-125 Out-of-bounds Read"
}
]
},
{
"description": [
{
"lang": "eng",
"value": "CWE-787 Out-of-bounds Write"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.samba.org/samba/security/CVE-2021-44142.html",
"refsource": "CONFIRM",
"url": "https://www.samba.org/samba/security/CVE-2021-44142.html"
},
{
"name": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin",
"refsource": "MISC",
"url": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin"
},
{
"name": "https://kb.cert.org/vuls/id/119678",
"refsource": "CERT-VN",
"url": "https://kb.cert.org/vuls/id/119678"
},
{
"name": "https://bugzilla.samba.org/show_bug.cgi?id=14914",
"refsource": "CONFIRM",
"url": "https://bugzilla.samba.org/show_bug.cgi?id=14914"
},
{
"name": "GLSA-202309-06",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202309-06"
}
]
},
"source": {
"discovery": "UNKNOWN"
}
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "4.15.5",
"versionStartIncluding": "4.15.0",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "4.14.12",
"versionStartIncluding": "4.14.0",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "4.13.17",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:synology:diskstation_manager:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "6.2.4-25556.4",
"versionStartIncluding": "6.2",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_resilient_storage:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:redhat:gluster_storage:3.5:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:8.1:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "cert@cert.org",
"ID": "CVE-2021-44142"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide \"...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver.\" Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
},
{
"lang": "en",
"value": "CWE-787"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.samba.org/samba/security/CVE-2021-44142.html",
"refsource": "CONFIRM",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"url": "https://www.samba.org/samba/security/CVE-2021-44142.html"
},
{
"name": "https://kb.cert.org/vuls/id/119678",
"refsource": "CERT-VN",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://kb.cert.org/vuls/id/119678"
},
{
"name": "https://bugzilla.samba.org/show_bug.cgi?id=14914",
"refsource": "CONFIRM",
"tags": [
"Issue Tracking",
"Patch",
"Vendor Advisory"
],
"url": "https://bugzilla.samba.org/show_bug.cgi?id=14914"
},
{
"name": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin",
"refsource": "MISC",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin"
},
{
"name": "GLSA-202309-06",
"refsource": "GENTOO",
"tags": [],
"url": "https://security.gentoo.org/glsa/202309-06"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
},
"lastModifiedDate": "2023-09-17T09:15Z",
"publishedDate": "2022-02-21T15:15Z"
}
}
}
Loading...
Loading...
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.