Cyrus-SASL: Buffer overflow and SASL_PATH vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200410-05 / Cyrus-SASL
Release Date	October 07, 2004
Latest Revision	May 22, 2006: 02
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-libs/cyrus-sasl	<= 2.1.18-r1	>= 2.1.18-r2	All supported architectures

Related bugreports: #56016

Synopsis

Cyrus-SASL contains two vulnerabilities that might allow an attacker to completely compromise the vulnerable system.

2. Impact Information

Background

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

Description

Cyrus-SASL contains a remote buffer overflow in the digestmda5.c file. Additionally, under certain conditions it is possible for a local user to exploit a vulnerability in the way the SASL_PATH environment variable is honored (CAN-2004-0884).

Impact

An attacker might be able to execute arbitrary code with the Effective ID of the application calling the Cyrus-SASL libraries.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

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

Code Listing 3.1: Resolution

# emerge sync

# emerge -pv ">=dev-libs/cyrus-sasl-2.1.18-r2"
# emerge ">=dev-libs/cyrus-sasl-2.1.18-r2"

4. References

Updated October 07, 2004

Summary: This is a Gentoo Linux Security Advisory

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