(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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Bash | Gnu | 1.14.0 | 1.14.0 |
| Bash | Gnu | 1.14.1 | 1.14.1 |
| Bash | Gnu | 1.14.2 | 1.14.2 |
| Bash | Gnu | 1.14.3 | 1.14.3 |
| Bash | Gnu | 1.14.4 | 1.14.4 |
| Bash | Gnu | 1.14.5 | 1.14.5 |
| Bash | Gnu | * | 1.14.6 |
| Tcsh | Tcsh | 6.05 | 6.05 |