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TITLE:
MDaemon IMAP Server "FETCH" Command Buffer Overflow

SECUNIA ADVISORY ID:
SA29382

VERIFY ADVISORY:
http://secunia.com/advisories/29382/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
MDaemon 9.x
http://secunia.com/product/10271/

DESCRIPTION:
Matteo Memelli has discovered a vulnerability in MDaemon, which can
be exploited by malicious users to compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the IMAP
server when processing the "FETCH" command. This can be exploited to
cause a stack-based buffer overflow via a specially crafted "FETCH"
command containing an overly long section specification in a "BODY"
data item.

Successful exploitation allows execution of arbitrary code, but
requires valid user credentials.

The vulnerability is confirmed in version 9.6.4. Other versions may
also be affected.

SOLUTION:
Grant only trusted users access to the affected service.

PROVIDED AND/OR DISCOVERED BY:
Matteo Memelli a.k.a. ryujin

ORIGINAL ADVISORY:
http://www.be4mind.com/?q=node/256

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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