GLSA 202209-10: Logcheck: Root privilege escalation

http://security.gentoo.org/

Severity:	normal
Title:	Logcheck: Root privilege escalation
Date:	09/25/2022
Bugs:	#630752
ID:	202209-10

Synopsis

A vulnerability has been discovered in Logcheck's ebuilds which could allow for root privilege escalation.

Background

Logcheck mails anomalies in the system logfiles to the administrator.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-admin/logcheck	<= 1.3.23		All supported architectures

Description

The pkg_postinst phase of the Logcheck ebuilds recursively chown the /etc/logcheck and /var/lib/logcheck directories. If the logcheck adds hardlinks to other files in these directories, the chown call will follow the link and transfer ownership of any file to the logcheck user.

Impact

A local attacker with access to the logcheck user could escalate to root privileges.

Workaround

There is no known workaround at this time.

Resolution

Gentoo has discontinued support for Logcheck. We recommend that users remove it:

          # emerge --ask --depclean "app-admin/logcheck"

References

CVE-2017-20148

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202209-10.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.