GLSA 201402-12: PAM S/Key: Information disclosure

http://security.gentoo.org/

Severity:	normal
Title:	PAM S/Key: Information disclosure
Date:	02/09/2014
Bugs:	#482588
ID:	201402-12

Synopsis

PAM S/Key does not clear provided credentials from memory, allowing local attackers to gain access to cleartext credentials.

Background

PAM S/Key is a pluggable authentication module for the OpenBSD Single-key Password system.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-auth/pam_skey	< 1.1.5-r5	>= 1.1.5-r5	All supported architectures

Description

Ulrich Müller reported that a Gentoo patch to PAM S/Key does not remove credentials provided by the user from memory.

Impact

A local attacker with privileged access could inspect a memory dump to gain access to cleartext credentials provided by users.

Workaround

There is no known workaround at this time.

Resolution

All PAM S/Key users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-auth/pam_skey-1.1.5-r5"

References

CVE-2013-4285

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201402-12.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.