Title: Trillian IRC User Mode Numeric Remote Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
Trillian is an instant messaging client that supports a number of protocols (including IRC, ICQ, MSN). It is available for Microsoft Windows systems.
A buffer overflow in Trillian may make remote code execution possible.
It has been reported that Trillian does not perform adequate bounds checking when receiving IRC raw user mode messages. When a Trillian client receives an instruction from a server for a raw user mode change containing 251 or more bytes of data, a buffer overflow occurs. This could result in denial of service, or the execution of arbitrary attacker supplied instructions.
The raw user mode instruction is irc raw code 221. It is typically used by the server to set any user mode settings. Any attacker-supplied instructions executed via this vulnerability would be executed in the security context of the Trillian user.
Affected Products:
- Cerulean Studios Trillian 0.725.0
- Cerulean Studios Trillian 0.73.0
- Cerulean Studios Trillian 0.74.0
References:
- Cerulean Studios: Trillian Homepage
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