GLSA 200808-09: OpenLDAP: Denial of Service vulnerability

http://security.gentoo.org/

Severity:	low
Title:	OpenLDAP: Denial of Service vulnerability
Date:	08/08/2008
Bugs:	#230269
ID:	200808-09

Synopsis

A flaw in OpenLDAP allows remote unauthenticated attackers to cause a Denial of Service.

Background

OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-nds/openldap	< 2.3.43	>= 2.3.43	All supported architectures

Description

Cameron Hotchkies discovered an error within the parsing of ASN.1 BER encoded packets in the "ber_get_next()" function in libraries/liblber/io.c.

Impact

A remote unauthenticated attacker can send a specially crafted ASN.1 BER encoded packet which will trigger the error and cause an "assert()", terminating the "slapd" daemon.

Workaround

There is no known workaround at this time.

Resolution

All OpenLDAP users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-nds/openldap-2.3.43"

References

CVE-2008-2952

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200808-09.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.