Upstream information

CVE-2016-2854 at MITRE

Description

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.

SUSE information

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.64
Vector AV:L/AC:L/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.8
Vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector Local
Access Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High

Note from the SUSE Security Team

This problem affects an external kernel filesystem 'aufs', which was never shipped or included by SUSE. So no SUSE or openSUSE Products are affected.

SUSE Bugzilla entry: 982780 [RESOLVED / INVALID]

No SUSE Security Announcements cross referenced.