Title: BitchX IRC Client "/INVITE" Format String Vulnerability
Severity: MODERATE
Description:
BitchX IRC clients, versions 75 up to and including 1.0c16, are vulnerable to a Denial of Service and possible remote execution of code. By /invite-ing someone to a channel name containing formatting characters (%s, %n, etc) an IRC user can cause the targetted user's BitchX client to seg-fault. This is caused by the fact that bitchx passes the channel name from the invite into the logging function as its format string [which is used directly in a vsprintf], rather than as an argument to the format. This also affects the KILL command.
Affected Products:
- BitchX IRC Client 0.0.075p1
- BitchX IRC Client 0.0.075p3
- BitchX IRC Client 1.0.0c16
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