CVE-2016-2853 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/ http://www.openwall.com/lists/oss-security/2016/02/24/9 http://www.securityfocus.com/bid/96839 https://sourceforge.net/p/aufs/mailman/message/34864744/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8