[NEWS] IBM Lotus Domino IMAP Buffer Overflow Vulnerability

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IBM Lotus Domino IMAP Buffer Overflow Vulnerability


<http://www-142.ibm.com/software/sw-lotus/domino> IBM Lotus Domino Server
software provides messaging, calendaring and scheduling capabilities on a
variety of operating systems. More information about the product is
available at the following URL.

Remote exploitation of a buffer overflow vulnerability within IBM Corp.'s
Lotus Domino allows attackers to execute arbitrary code in the context of
the IMAP service.


Vulnerable Systems:
* Lotus Domino version running on Linux as well as Windows Server
* Previous versions, as well as builds for other platforms, are suspected
to be vulnerable.

This vulnerability exists within the IMAP component of a Domino Server.
The problem specifically lies in the handling of mailbox names within
specific commands. If a user has subscribed to a mailbox with an overly
long name, certain commands will copy the user-supplied mailbox name into
a fixed-size stack buffer without proper validation.

Exploitation allows attackers to execute arbitrary code in the context of
the IMAP service. In order to conduct the attack, the attacker must be
able to establish a TCP session with the IMAP service on TCP port 143.
Valid credentials are required to access the vulnerable code.

Under Windows, the privileges gained are (by default) that of the SYSTEM
user. This allows an attacker to take complete control of the compromised

Although the UNIX version of the service does not run as root, it does run
as the same user as many other components of the Lotus Domino Server.
Because of this an attacker may gain access to sensitive information or be
able to maliciously subvert the system in other ways.

Employing firewalls to limit access to the affected service will mitigate
exposure to this vulnerability.

Vendor Status:
IBM Lotus has addressed this vulnerability within versions 6.5.6 Fix Pack
2 (FP2), 7.0.3 and 8.0 of Lotus Domino. For more information, visit the
following URL.

CVE Information:

Disclosure Timeline:
* 06/27/2007 Initial vendor notification
* 06/28/2007 Initial vendor response
* 10/23/2007 Coordinated public disclosure


The information has been provided by iDefense.
The original article can be found at:



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