Access Restriction Bypass Affecting kernel-firmware package, versions <0:2.6.32-220.23.1.el6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-RHEL6-KERNELFIRMWARE-1441828
  • published26 Jul 2021
  • disclosed17 Apr 2012

Introduced: 17 Apr 2012

CVE-2012-2123  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade RHEL:6 kernel-firmware to version 0:2.6.32-220.23.1.el6 or higher.
This issue was patched in RHSA-2012:0743.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-firmware package and not the kernel-firmware package as distributed by RHEL. See How to fix? for RHEL:6 relevant fixed versions and status.

The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.

CVSS Scores

version 3.1