CVE-2016-2854 - OpenCVE

The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

AV:L/AC:L/Au:N/C:P/I:P/A:P

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Linux	Linux Kernel

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

No data.

References

Link	Providers
http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/
http://www.openwall.com/lists/oss-security/2016/02/24/9
http://www.securityfocus.com/bid/96838
https://nvd.nist.gov/vuln/detail/CVE-2016-2854
https://sourceforge.net/p/aufs/mailman/message/34864744/
https://www.cve.org/CVERecord?id=CVE-2016-2854

History

No history.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2016-05-02T10:00:00

Updated: 2024-08-05T23:32:21.329Z

Reserved: 2016-03-06T00:00:00

Link: CVE-2016-2854

Vulnrichment

No data.

NVD

Status : Analyzed

Published: 2016-05-02T10:59:34.533

Modified: 2020-08-07T19:53:06.923

Link: CVE-2016-2854

Redhat

Severity :

Publid Date: 2016-02-24T00:00:00Z

Links: CVE-2016-2854 - Bugzilla

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2016-02-19T00:00:00", "descriptions": [{"lang": "en", "value": "The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-03-14T09:57:01", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/"}, {"name": "[oss-security] 20160224 Aufs Union Filesystem Privilege Escalation In User Namespaces", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2016/02/24/9"}, {"name": "[aufs] 20160219 aufs3 and aufs4 GIT release", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://sourceforge.net/p/aufs/mailman/message/34864744/"}, {"name": "96838", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/96838"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2016-2854", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/", "refsource": "MISC", "url": "http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/"}, {"name": "[oss-security] 20160224 Aufs Union Filesystem Privilege Escalation In User Namespaces", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2016/02/24/9"}, {"name": "[aufs] 20160219 aufs3 and aufs4 GIT release", "refsource": "MLIST", "url": "https://sourceforge.net/p/aufs/mailman/message/34864744/"}, {"name": "96838", "refsource": "BID", "url": "http://www.securityfocus.com/bid/96838"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T23:32:21.329Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/"}, {"name": "[oss-security] 20160224 Aufs Union Filesystem Privilege Escalation In User Namespaces", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2016/02/24/9"}, {"name": "[aufs] 20160219 aufs3 and aufs4 GIT release", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://sourceforge.net/p/aufs/mailman/message/34864744/"}, {"name": "96838", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/96838"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2016-2854", "datePublished": "2016-05-02T10:00:00", "dateReserved": "2016-03-06T00:00:00", "dateUpdated": "2024-08-05T23:32:21.329Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "480F226E-935E-4AA0-AEDC-7A164F28B1A0", "versionEndIncluding": "3.19.8", "versionStartIncluding": "3.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7FF42CEC-BC1A-4932-AD2D-004152E895B3", "versionEndIncluding": "4.20.15", "versionStartIncluding": "4.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory."}, {"lang": "es", "value": "El m\u00f3dulo aufs para el kernel de Linux 3.x y 4.x no mantiene correctamente datos POSIX ACL xattr, lo que permite a usuarios locales obtener privilegos aprovechando un directorio con permiso de escritura de grupo setgid."}], "id": "CVE-2016-2854", "lastModified": "2020-08-07T19:53:06.923", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-05-02T10:59:34.533", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/02/24/9"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/96838"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://sourceforge.net/p/aufs/mailman/message/34864744/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}], "source": "nvd@nist.gov", "type": "Primary"}]}