CVE-1999-1048: Undefined Security Weakness

Buffer overflow in bash 2.0.0, 1.4.17, and other versions allows local attackers to gain privileges by creating an extremely large directory name, which is inserted into the password prompt via the \w option in the PS1 environmental variable when another user changes into that directory...

CVE-1999-1383: Undefined Security Weakness

1 bash before 1.14.7, and 2 tcsh 6.05 allow local users to gain privileges via directory names that contain shell metacharacters back-tick, which can cause the commands enclosed in the directory name to be executed when the shell expands filenames using the \w option in the PS1 variable...