GLSA 201709-05: chkrootkit: Local privilege escalation

http://security.gentoo.org/

Severity:	high
Title:	chkrootkit: Local privilege escalation
Date:	09/17/2017
Bugs:	#512356
ID:	201709-05

Synopsis

A vulnerability in chkrootkit may allow local users to gain root privileges.

Background

chkrootkit is a tool to locally check for signs of a rootkit.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-forensics/chkrootkit	< 0.50	>= 0.50	All supported architectures

Description

When /tmp is mounted without the noexec option chkrootkit will execute files in /tmp with root privileges.

Impact

A local attacker could possibly execute arbitrary code with root privileges.

Workaround

Users should mount /tmp with noexec option.

Resolution

All chkrootkit users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-forensics/chkrootkit-0.50"

References

CVE-2014-0476

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201709-05.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.