GLSA 201309-01: Cyrus-SASL: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	Cyrus-SASL: Denial of Service
Date:	09/01/2013
Bugs:	#476764
ID:	201309-01

Synopsis

A NULL pointer dereference in Cyrus-SASL may allow remote attackers to cause a Denial of Service condition.

Background

Cyrus-SASL is an implementation of the Simple Authentication and Security Layer.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/cyrus-sasl	< 2.1.26-r3	>= 2.1.26-r3	All supported architectures

Description

In the GNU C Library (glibc) from version 2.17 onwards, the crypt() function call can return NULL when the salt violates specifications or the system is in FIPS-140 mode and a DES or MD5 hashed password is passed. When Cyrus-SASL’s authentication mechanisms call crypt(), a NULL may be returned.

Impact

A remote attacker could trigger this vulnerability to cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Cyrus-SASL users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/cyrus-sasl-2.1.26-r3"

References

CVE-2013-4122

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201309-01.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.