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CVE-2016-2854

Good to know:

Date: May 2, 2016

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.

Severity Score

7.8

Related Resources (5)

Url: http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/

Url: http://www.securityfocus.com/bid/96838

Url: https://sourceforge.net/p/aufs/mailman/message/34864744/

Url: https://nvd.nist.gov/vuln/detail/CVE-2016-2854

Url: https://www.mend.io/vulnerability-database/CVE-2016-2854

Severity Score

7.8

Weakness Type (CWE)

Improper Privilege Management

CWE-269

Top Fix

Upgrade Version

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	4.6
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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