IBM Lotus Domino NRPC Information Disclosure
Secunia Advisory: SA22741
Release Date: 2006-11-09
Last Update: 2006-11-16
Popularity: 9,790 views

Critical:
Less critical
Impact: Exposure of sensitive information
Where: From local network
Solution Status: Vendor Patch

Software:IBM Lotus Domino 5.x
IBM Lotus Domino 6.x
IBM Lotus Domino 7.x

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CVE reference:CVE-2006-5835


Description:
Andrew Christensen has reported a vulnerability in IBM Lotus Domino, which can be exploited by malicious people to gain knowledge of sensitive information.

The vulnerability exist due to an error in the Notes Remote Procedure Call (NRPC) protocol on port 1352 when using unauthenticated name lookup transactions. This can be exploited to list valid user names and download user ID files of existing users.

The vulnerability is reported in versions 5.0, 6.0, 6.5, and 7.0.

Solution:
Update to version 6.5.5 Fix Pack 2 (FP2) or 7.0.2 and configure the "BLOCK_LOOKUPID" variable in the server's "notes.ini" file (see the vendor's advisory for details).

Provided and/or discovered by:
Andrew Christensen, FortConsult.

Changelog:
2006-11-16: Added CVE reference.

Original Advisory:
IBM:
http://www-1.ibm.com/support/docview.wss?rs=463&uid=swg21248026

FortConsult:
http://www.fortconsult.net/images/pdf/lotusnotes_keyfiles.pdf


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