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TITLE:
QK SMTP Server "RCPT TO:" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA22563

VERIFY ADVISORY:
http://secunia.com/advisories/22563/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
QK SMTP Server 3.x
http://secunia.com/product/12405/

DESCRIPTION:
Greg Linares has discovered a vulnerability in QK SMTP Server, which
potentially can be exploited by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to a boundary error within the
handling of arguments passed to the "RCPT TO:" command. This can be
exploited to cause a stack-based overflow by supplying an overly long
argument to the vulnerable command.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in version 3.01. Prior versions may
also be affected.

SOLUTION:
The vulnerability has been fixed in version 3.1 Beta.

PROVIDED AND/OR DISCOVERED BY:
Greg Linares

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About:
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