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TITLE:
WinGate IMAP Server Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA31442

VERIFY ADVISORY:
http://secunia.com/advisories/31442/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
WinGate 6.x
http://secunia.com/product/3651/

DESCRIPTION:
Joćo Antunes has discovered a vulnerability in WinGate, which can be
exploited by malicious users to cause a DoS (Denial of Service) or to
potentially compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the processing
of IMAP commands. This can be exploited to cause a heap-based buffer
overflow by issuing an IMAP LIST command with an overly long
argument.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in version 6.2.2.1137. Other versions
may also be affected.

SOLUTION:
Restrict mail access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Joćo Antunes

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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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