gen-index in GNATS 4.0, 4.1.0, and possibly earlier versions, when installed setuid, does not properly check files passed to the -o argument and opens the file with write access, which allows local users to overwrite arbitrary files.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gnats | Gnu | 4.0 (including) | 4.0 (including) |
| Gnats | Gnu | 4.1.0 (including) | 4.1.0 (including) |