GLSA 200907-09: Cyrus-SASL: Execution of arbitrary code

http://security.gentoo.org/

Severity:	high
Title:	Cyrus-SASL: Execution of arbitrary code
Date:	07/12/2009
Bugs:	#270261
ID:	200907-09

Synopsis

A buffer overflow in Cyrus-SASL might allow for the execution of arbitrary code in applications or daemons that authenticate using SASL.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/cyrus-sasl	< 2.1.23	>= 2.1.23	All supported architectures

Description

James Ralston reported that in certain situations, Cyrus-SASL does not properly terminate strings which can result in buffer overflows when performing Base64 encoding.

Impact

A remote unauthenticated user might send specially crafted packets to a daemon using Cyrus-SASL, possibly resulting in the execution of arbitrary code with the privileges of the user running the daemon or a Denial of Service.

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-2.1.23"

References

CVE-2009-0688

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200907-09.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.