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Vixie cron is an implementation of the popular UNIX program that runs user-specified programs at periodic scheduled times. When a parsing error occurs after a modification operation, crontab will fail to drop privileges correctly for subsequent modification operations. This vulnerability may be exploited to gain root privileges locally.

Vixie cron is an implementation of the popular UNIX program that runs user-specified programs at periodic scheduled times. When a parsing error occurs after a modification operation, crontab will fail to drop privileges correctly for subsequent modification operations. This vulnerability may be exploited to gain root privileges locally.