CVE-2016-2854

high

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.

References

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

Details

Source: MITRE

Published: 2016-05-02

Updated: 2020-08-07

Type: CWE-269

Risk Information

CVSS v2

Base Score: 4.6

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

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH