The PerlIO package for Perl 5.8.0 suffers from a flaw where manipulation of the filename set in PERLIO_DEBUG allows for local root compromise when using setuid perl.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/36089/DMA-2005-0131a.txt
Source: https://packetstormsecurity.com/files/36089/DMA-2005-0131a.txt.html