PAM-MySQL: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200606-18 / pam_mysql
Release Date	June 15, 2006
Latest Revision	July 29, 2006: 02
Impact	normal
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
sys-auth/pam_mysql	< 0.7_rc1	>= 0.7_rc1	All supported architectures

Related bugreports: #120842

Synopsis

Vulnerabilities in PAM-MySQL can lead to a Denial of Service, making it impossible to log into a machine.

2. Impact Information

Background

PAM-MySQL is a PAM module used to authenticate users against a MySQL backend.

Description

A flaw in handling the result of pam_get_item() as well as further unspecified flaws were discovered in PAM-MySQL.

Impact

By exploiting the mentioned flaws an attacker can cause a Denial of Service and thus prevent users that authenticate against PAM-MySQL from logging into a machine. There is also a possible additional attack vector with more malicious impact that has not been confirmed yet.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All PAM-MySQL users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-auth/pam_mysql-0.7_rc1"

4. References

Updated June 15, 2006

Summary: This is a Gentoo Linux Security Advisory

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