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CERT Coordination Center

Network Associates PGP Keyserver contains multiple vulnerabilities in LDAP handling code

Vulnerability Note VU#765256

Original Release Date: 2001-07-17 | Last Revised: 2002-12-12


The Network Associates PGP Keyserver contains 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 Network Associates PGP Keyserver 7.0 contains multiple vulnerabilities in the code that processes LDAP requests.

In the encoding section of the test suite, this product failed 12 of 16 groups.

In the application section of the test suite, this product failed 1 of 77 groups. The failed group focused on out-of-bounds integer values for the messageID parameter. Due to a peculiarity of this test group, this failure may actually represent an encoding failure.


One or more of these vulnerabilities allow a remote attacker to execute arbitrary code with the privileges of the Keyserver. The server typically runs with system privileges. At least one of these vulnerabilities has been successfully exploited in a laboratory environment.


Apply a patch from your vendor

Please consult the Systems Affected 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


Network Associates Affected

Notified:  April 06, 2001 Updated: July 16, 2001



Vendor Statement

Network Associates has resolved these vulnerabilities in Hotfix 2 for both Solaris and Windows NT. All Network Associates Enterprise Support customers have been notified and have been provided access to the Hotfix.

This Hotfix can be downloaded at

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-2001-1320
CERT Advisory: CA-2001-18
Severity Metric: 37.71
Date Public: 2001-07-16
Date First Published: 2001-07-17
Date Last Updated: 2002-12-12 23:24 UTC
Document Revision: 29

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