Improper Privilege Management Affecting kernel package, versions <0:3.14.19-17.43.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1677672
  • published27 Sept 2021
  • disclosed18 Aug 2014

Introduced: 18 Aug 2014

CVE-2014-5206  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:3.14.19-17.43.amzn1 or higher.
This issue was patched in ALAS-2014-417.

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 do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.

CVSS Scores

version 3.1