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CERT Coordination Center

Potential vulnerabilities in Qualcomm Eudora WorldMail Server LDAP handling code

Vulnerability Note VU#717380

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


The Qualcomm Eudora WorldMail Server may contain vulnerabilities that 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.


While investigating the vulnerabilities reported by by the Oulu University Secure Programming Group (OUSPG), it was brought to our attention that the Eudora WorldMail Server may contain vulnerabilities that can be triggered via the PROTOS test suite. The CERT/CC has reported this possibility to Qualcomm and an investigation is pending.


The CERT/CC has not yet determined the impact of this vulnerability.


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



Notified:  June 01, 2001 Updated: July 17, 2001



Vendor Statement

The LDAP service in WorldMail may be vulnerable to this exploit, but our tests so far have been inconclusive. At this time, we strongly urge all WorldMail customers to ensure that the LDAP service is not accessible from outside their organization nor by untrusted users.

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.

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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-2001-1318
CERT Advisory: CA-2001-18
Date Public: 2001-07-16
Date First Published: 2001-07-17
Date Last Updated: 2002-12-12 23:24 UTC
Document Revision: 27

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