IBM Lotus Domino IMAP Buffer Overflow Vulnerability
iDefense Security Advisory 10.23.07
http://labs.idefense.com/intelligence/vulnerabilities/
Oct 23, 2007
I. BACKGROUND
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.
http:
//www-142.ibm.com/software/sw-lotus/domino
II. DESCRIPTION
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.
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.
III. ANALYSIS
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 system.
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.
IV. DETECTION
iDefense has confirmed the existence of this vulnerability
within
version 7.0.2.2 of Lotus Domino running on Linux as well as
Windows
Server 2003. Previous versions, as well as builds for other
platforms,
are suspected to be vulnerable.
V. WORKAROUND
Employing firewalls to limit access to the affected service
will
mitigate exposure to this vulnerability.
VI. VENDOR RESPONSE
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.
http://www-1.ibm.com/support/docview.wss?rs=4
77&uid=swg21270623
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has
assigned the
name CVE-2007-3510 to this issue. This is a candidate for
inclusion in
the CVE list (http://cve.mitre.org/),
which standardizes names for
security problems.
VIII. DISCLOSURE TIMELINE
06/27/2007 Initial vendor notification
06/28/2007 Initial vendor response
10/23/2007 Coordinated public disclosure
IX. CREDIT
This vulnerability was reported to iDefense by Manuel
Santamarina
Suarez.
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Copyright © 2007 iDefense, Inc.
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Disclaimer: The information in the advisory is believed to
be accurate
at the time of publishing based on currently available
information. Use
of the information constitutes acceptance for use in an AS
IS condition.
There are no warranties with regard to this information.
Neither the
author nor the publisher accepts any liability for any
direct,
indirect, or consequential loss or damage arising from use
of, or
reliance on, this information.
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