Description
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.
References
- 20050706 GNATS - gen-index mailing-list
- http://www.pi3.int.pl/adv/gnats.txt
- 15963 third-party-advisory