SB2014081803 - Permissions, Privileges, and Access Controls in Linux kernel

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2014081803

SB2014081803 - Permissions, Privileges, and Access Controls in Linux kernel

Published: August 18, 2014 Updated: August 10, 2020

Security Bulletin ID SB2014081803
Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2014-5206)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

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.


Remediation

Install update from vendor's website.

References