Access Restriction Bypass Affecting kernel package, versions <0:3.10.48-55.140.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1675415
  • published27 Sept 2021
  • disclosed23 Jun 2014

Introduced: 23 Jun 2014

CVE-2014-4014  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:3.10.48-55.140.amzn1 or higher.
This issue was patched in ALAS-2014-368.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The capabilities implementation in the Linux kernel before 3.14.8 does not properly consider that namespaces are inapplicable to inodes, which allows local users to bypass intended chmod restrictions by first creating a user namespace, as demonstrated by setting the setgid bit on a file with group ownership of root.

CVSS Scores

version 3.1