GLSA 202008-09: Shadow: Privilege escalation

http://security.gentoo.org/

Severity:	high
Title:	Shadow: Privilege escalation
Date:	08/25/2020
Bugs:	#702252
ID:	202008-09

Synopsis

Multiple Shadow utilities were installed with setuid permissions, allowing possible root privilege escalation.

Background

Shadow is a set of tools to deal with user accounts.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/shadow	< 4.8-r3	>= 4.8-r3	All supported architectures

Description

When Shadow was installed with the PAM use flag, setuid binaries provided by Shadow were not properly restricted.

Impact

A local attacker could escalate privileges to root.

Workaround

There is no known workaround at this time.

Resolution

All Shadow users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.8-r3"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202008-09.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.