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mIRC < 6.03 Scripting $asctime Overflow

Medium

Synopsis

The remote host is vulnerable to a buffer overflow.

Description

The remote host is running the mIRC chat client. A buffer overflow has been reported in the $asctime identifier, a function in the mIRC scripting language. The error lies in the handling of oversized format specifier strings. Exploitation relies on a script passing untrusted input into this function. Reportedly, no such script is included in the default installation of mIRC.

Solution

Upgrade to version 6.03 or higher.