PT-2014-6345 · Linux+3 · Linux Kernel+3

Kenton Varda

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Publicado

2014-08-13

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Atualizado

2023-08-25

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CVE-2014-5206

CVSS v2.0

7.2

Alta

VetorAV:L/AC:L/Au:N/C:C/I:C/A:C
Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.16.2
Description The issue allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms. This is achieved via a "mount -o remount" command within a user namespace, exploiting the fact that the do remount function in fs/namespace.c does not maintain the MNT LOCK READONLY bit across a remount of a bind mount.
Recommendations For Linux kernel versions prior to 3.16.2, update to version 3.16.2 or later to resolve the issue. As a temporary workaround, consider restricting the use of the "mount -o remount" command within user namespaces to minimize the risk of exploitation.

Exploit

Correção

Improper Privilege Management

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Enumeração de Fraquezas

CWE-269

Identificadores relacionados

ALT-PU-2014-2023
ALT-PU-2014-2024
ALT-PU-2014-2025
ALT-PU-2014-2106
ALT-PU-2015-1794
CVE-2014-5206
OPENSUSE-SU-2014_1677-1
USN-2317-1
USN-2318-1

Produtos afetados

Alt Linux
Linux Kernel
Suse
Ubuntu