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Lotus Domino IMAP Server < 6.5.6 / 7.0.2 FP1 CRAM-MD5 Authentication Overflow

High

Synopsis

The remote IMAP server is affected by a buffer overflow vulnerability.

Description

The IMAP server component of IBM Lotus Domino Server installed on the remote host fails to check the length of the supplied username in its CRAM-MD5 authentication mechanism before processing it. By supplying a username over 256 bytes, an unauthenticated remote attacker can leverage this issue to crash the affected service and possibly execute arbitrary code remotely.

Solution

Upgrade to version 6.5.6, 7.0.2 FP1 or higher.