CVE-2014-5206

Severity CVSS v4.0:

Pending analysis

Type:

CWE-269 Improper Privilege Management

Publication date:

18/08/2014

Last modified:

12/04/2025

Description

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.

Impact

Vector 2.0

AV:L/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

7.20

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	3.8 (including)	3.10.55 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	3.11 (including)	3.12.27 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	3.13 (including)	3.14.19 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	3.15 (including)	3.16.3 (excluding)
cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::

To consult the complete list of CPE names with products and versions, see this page

CVE-2014-5206

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools