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Cyrus-SASL: DIGEST-MD5 Pre-Authentication Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200604-09 / cyrus-sasl
Release Date April 21, 2006
Latest Revision April 21, 2006: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-libs/cyrus-sasl < 2.1.21-r2 >= 2.1.21-r2 All supported architectures

Related bugreports: #129523

Synopsis

Cyrus-SASL contains a vulnerability in the DIGEST-MD5 process that could lead to a Denial of Service.

2.  Impact Information

Background

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

Description

Cyrus-SASL contains an unspecified vulnerability in the DIGEST-MD5 process that could lead to a Denial of Service.

Impact

An attacker could possibly exploit this vulnerability by sending specially crafted data stream to the Cyrus-SASL server, resulting in a Denial of Service even if the attacker is not able to authenticate.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

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

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/cyrus-sasl-2.1.21-r2"

4.  References



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Page updated April 21, 2006

Summary: This is a Gentoo Linux Security Advisory

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