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[SA32102] mIRC "PRIVMSG" Processing Buffer Overflow Vulnerability

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri Oct 03 2008 - 18:30:05 CDT


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TITLE:
mIRC "PRIVMSG" Processing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA32102

VERIFY ADVISORY:
http://secunia.com/advisories/32102/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
mIRC 6.x
http://secunia.com/advisories/product/2281/

DESCRIPTION:
securfrog has discovered a vulnerability in mIRC, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the processing
of "PRIVMSG" IRC messages. This can be exploited to cause a
stack-based buffer overflow by tricking a user into connecting to a
malicious IRC server.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 6.34. Other versions may
also be affected.

SOLUTION:
Do not connect to untrusted IRC servers.

Do not follow untrusted links or browse untrusted websites.

PROVIDED AND/OR DISCOVERED BY:
securfrog

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/6654

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