Joe text editor follows symbolic links when creating a rescue copy called DEADJOE during an abnormal exit, which allows local users to overwrite the files of other users whose joe session crashes.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2000-1163
http://www.securityfocus.com/bid/1959
http://www.redhat.com/support/errata/RHSA-2000-110.html
http://www.linux-mandrake.com/en/security/MDKSA-2000-072.php3
http://marc.info/?l=bugtraq&m=97500174210821&w=2
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000356
http://archives.neohapsis.com/archives/bugtraq/2000-11/0227.html