From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Oct 14 2003 - 04:47:44 CDT

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TITLE:
mIRC IRC URI Handler Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA9996

VERIFY ADVISORY:
http://www.secunia.com/advisories/9996/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
mIRC 6.x

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

The vulnerability is caused due to a boundary error when a browser
passes input to mIRC via the "irc:" URI handler. This can be
exploited by supplying an overly long, specially crafted hostname,
which causes a buffer overflow.

Example:
irc://[AAAA...[x998]...AAAA

Succesful exploitation allows execution of arbitrary code on the
user's system.

The vulnerability may be related to:
SA9906

SOLUTION:
Update to version 6.12:
http://www.mirc.com/get.html

REPORTED BY / CREDITS:
Phuong Nguyen

OTHER REFERENCES:
SA9906:
http://www.secunia.com/advisories/9906/

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