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TITLE:
Fetchmail UIDL Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA16176

VERIFY ADVISORY:
http://secunia.com/advisories/16176/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Fetchmail 6.x
http://secunia.com/product/370/

DESCRIPTION:
Matthias Andree has reported a vulnerability in fetchmail, which can
be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error when handling
UIDL responses from a POP3 server and can be exploited to cause a
stack-based buffer overflow.

Successful exploitation allows execution of arbitrary code, but
requires that the user is tricked into connecting to a malicious POP3
server.

The vulnerability has been reported in versions 6.2.0, 6.2.5, and
6.2.5.1. Prior versions may also be affected.

SOLUTION:
Update to version 6.2.5.2 or later.

PROVIDED AND/OR DISCOVERED BY:
Matthias Andree

ORIGINAL ADVISORY:
http://fetchmail.berlios.de/fetchmail-SA-2005-01.txt

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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.

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