Upstream information

CVE-2016-2853 at MITRE

Description

The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.

SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.4
Vector AV:L/AC:M/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database
Base Score 7
Vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector Local
Access Complexity High
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: 982781 [RESOLVED / INVALID]

No SUSE Security Announcements cross referenced.