Buffer overflow in bctool in Jetico BestCrypt 0.8.1 and earlier allows local users to execute arbitrary code via a file or directory with a long pathname, which is processed during an unmount.

bctool in Jetico BestCrypt 0.7 and earlier trusts the user-supplied PATH to find and execute an fsck utility program, which allows local users to gain privileges by modifying the PATH to point to a Trojan horse program.