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

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

Package	sys-auth/pam_skey on all architectures
Affected versions	< 1.1.5-r5
Unaffected versions	>= 1.1.5-r5

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

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

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

There is no known workaround at this time.

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"

Release date
February 09, 2014

Latest revision
February 09, 2014: 1

Severity
normal

Exploitable
local

Bugzilla entries