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Gentoo GLSA-202209-10: Logcheck Root Privilege Escalation Normal

gentoo
Calendar Grey September 25, 2022
Dist Gentoo Esm H88
An administrative access flaw in Logcheck affecting Gentoo users calls for essential software uninstallation measures.
A vulnerability has been discovered in Logcheck's ebuilds which could allow for root privilege escalation.

Summary

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.

Topics%20covered

Topics Covered

security advisory gentoo software removal logcheck root escalation normal severity

Resolution

Gentoo has discontinued support for Logcheck. We recommend that usersremove it: # emerge --ask --depclean "app-admin/logcheck"

References

[ 1 ] CVE-2017-20148 https://nvd.nist.gov/vuln/detail/CVE-2017-20148

Availability

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

Severity: Normal
Title: Logcheck: Root privilege escalation
Date: September 25, 2022
Bugs: #630752
ID: 202209-10

Topics%20covered

Topics Covered

security advisory gentoo software removal logcheck root escalation normal severity

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-admin/logcheck <= 1.3.23 Vulnerable!

Impact

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

Workaround

There is no known workaround at this time.

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