Vulnerability Note VU#927988

IBM Lotus Domino LDAP server DN message heap buffer overflow

Original Release date: 28 Mar 2007 | Last revised: 28 Mar 2007


The IBM Lotus Domino LDAP server is vulnerable to a heap buffer overflow, which may allow a remote, unauthenticated attacker to execute arbitrary code or cause a denial of service.


IBM Lotus Domino server software provides email, calendar, scheduling, and collaboration services. The LDAP component of Lotus Domino is vulnerable to a heap buffer overflow if it handles a DN (Distinguished Name) message with a string larger than 65535 bytes.


A remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the LDAP server component or cause a denial of service.


Apply an update

This issue is addressed in Lotus Domino 7.0.2 Fix Pack 1 (FP1) and 6.5.6., as specified in IBM Technote 1257248.

Block or restrict access

Block or restrict access to the Lotus Domino LDAP service (typically 389/tcp) from untrusted networks such as the internet.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
IBM CorporationAffected-28 Mar 2007
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported by iDefense Labs, who in turn credit an anonymous discoverer.

This document was written by Will Dormann.

Other Information

  • CVE IDs: Unknown
  • Date Public: 28 Mar 2007
  • Date First Published: 28 Mar 2007
  • Date Last Updated: 28 Mar 2007
  • Severity Metric: 8.60
  • Document Revision: 5


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