mIRC $asctime identifier buffer overflow
| mirc-asctime-bo (9970) |  High Risk |
Description:
mIRC is vulnerable to a buffer overflow in the $asctime identifier. If an mIRC client has the script installed on their computer that calls $asctime, a remote attacker in control of a malicious IRC server could pass a format specifier containing more than 388 bytes to the $asctime identifier to overflow a buffer and execute code on the system.
Platforms Affected:
- mIRC, mIRC 6.00
- mIRC, mIRC 6.01
- mIRC, mIRC 6.02
Remedy:
Upgrade to the latest version of mIRC (6.03 or later), available from the mIRC Home page. See References.
Consequences:
Gain Access
References:
- mIRC Home page, mIRC - An Internet Relay Chat program at http://www.mirc.com/index.html.
- uuuppz.com - Advisory 002, mIRC $asctime overflow at http://www.uuuppz.com/research/adv-002-mirc.htm.
- BID-5576: mIRC Scripting ASCTime Buffer Overflow Vulnerability
- CVE-2002-1456: Buffer overflow in mIRC 6.0.2 and earlier allows remote attackers to execute arbitrary code via a long $asctime value.
Reported:
Aug 27, 2002
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