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CERT Coordination Center

Critical Path directory products contain multiple vulnerabilities in LDAP handling code

Vulnerability Note VU#657547

Original Release Date: 2001-08-13 | Last Revised: 2002-12-12


Multiple Critical Path directory products contain vulnerabilities that may allow denial-of-service attacks, unauthorized privileged access, or both. These vulnerabilities were revealed using the PROTOS LDAPv3 test suite and are documented in CERT Advisory CA-2001-18. If your site uses this product, the CERT/CC encourages you to follow the advice provided below.


The InJoin Directory Server and LiveContent Directory both contain multiple vulnerabilities in the code that processes LDAP requests. These vulnerabilities were discovered independently by Critical Path using the PROTOS LDAPv3 test suite.

The tests conducted by Critical Path demonstrated failures in both the encoding and application sections of the test suite.


These vulnerabilities allow a remote attacker to crash affected Critical Path directory servers, resulting in a denial-of-service condition. They may also allow a remote attacker to execute arbitrary code with the privileges of the directory server. The server typically runs with system privileges.


Apply a patch from your vendor

Please consult the vendor section for vendor-specific information on addressing this vulnerability.

Block access to directory services at network perimeter

As a temporary measure, it is possible to limit the scope of these vulnerabilities by blocking access to directory services at the network perimeter. Please note that this workaround does not protect vulnerable products from internal attacks.

            ldap    389/tcp     # Lightweight Directory Access Protocol
            ldap    389/udp     # Lightweight Directory Access Protocol
            ldaps   636/tcp     # ldap protocol over TLS/SSL (was sldap)
            ldaps   636/udp     # ldap protocol over TLS/SSL (was sldap)

Vendor Information


Critical Path Affected

Notified:  August 06, 2001 Updated: August 13, 2001



Vendor Statement

Critical Path is committed to ensuring that all supported versions of the Directory Server are free of vulnerabilities of the type identified in the above referenced vulnerability note. The outcome of this will be at a minimum, a patch or upgrade to remove the vulnerability from each of the supported versions.

Please visit Critical Path InJoin Directory Server support pages at ( for details on workarounds and patch availability information for the potential vulnerabilities discovered in the InJoin Directory Server.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector



The CERT Coordination Center thanks the Oulu University Secure Programming Group for reporting these vulnerabilities to us, for their detailed technical analyses, and for their assistance in preparing this document.

This document was written by Jeffrey P. Lanza.

Other Information

CVE IDs: CVE-2001-1314
CERT Advisory: CA-2001-18
Severity Metric: 3.54
Date Public: 2001-08-02
Date First Published: 2001-08-13
Date Last Updated: 2002-12-12 23:22 UTC
Document Revision: 19

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