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imwheel -- insecure handling of PID file


A Computer Academic Underground advisory describes the consequences of imwheel's handling of the process ID file (PID file):

imwheel exclusively uses a predictably named PID file for management of multiple imwheel processes. A race condition exists when the -k command-line option is used to kill existing imwheel processes. This race condition may be used by a local user to Denial of Service another user using imwheel, lead to resource exhaustion of the host system, or append data to arbitrary files.



portaudit: imwheel -- insecure handling of PID file

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If you have found a vulnerability in a FreeBSD port not listed in the database, please contact the FreeBSD Security Officer. Refer to "FreeBSD Security Information" for more information.

Oliver Eikemeier <>