Improper Access Control Affecting kernel-debug package, versions <0:2.6.32-754.12.1.el6


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (1st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Improper Access Control vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS6-KERNELDEBUG-2156658
  • published26 Jul 2021
  • disclosed5 Jul 2018

Introduced: 5 Jul 2018

CVE-2018-13405  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade Centos:6 kernel-debug to version 0:2.6.32-754.12.1.el6 or higher.

NVD Description

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

The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.

CVSS Scores

version 3.1