CVE-2016-2854

Public Exploit

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Third-Party Advisory halfdog.net Third-Party Advisory openwall.com Third-Party Advisory securityfocus.com Third-Party Advisory sourceforge.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/ third party advisory exploit
http://www.openwall.com/lists/oss-security/2016/02/24/9 mailing list third party advisory exploit
https://sourceforge.net/p/aufs/mailman/message/34864744/ third party advisory mailing list
http://www.securityfocus.com/bid/96838 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-2854?
CVE-2016-2854 has been scored as a high severity vulnerability.
How to fix CVE-2016-2854?
To fix CVE-2016-2854, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-2854 being actively exploited in the wild?
It is possible that CVE-2016-2854 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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