[whizkunde security advisory: PerlCal (CGI)] http://www.whizkunde.org | stanat_private ---------------------------------------------------------- Release date: April 27th 2001 Subject: PerlCal (CGI) security problem Systems affected: *NIX (not windows) systems running PerlCal CGI script Vendor: http://www.perlcal.com ---------------------------------------------------------- 1. problem cal_make.pl of the PerlCal script may allow remote users (website visitors) to view any file on a webserver (depending on the user the webserver is running on). Regard this URL: http://www.VULNERABLE.com/cgi-bin/cal_make.pl? p0=../../../../../../../../../../../../etc/passwd%00 This will display the /etc/passwd (if the webserver user has access to this file). 2. fix I warned the PerlCal vendor three weeks ago. After a reaction, I gave him some time and tips to release a fix. Because the vendor still hasn't fixed the problem and because he didn't notice me why he hasn't released a patch yet, I released this advisory. I really hope the vendor will release a patch in the very near future. In the meantime it might be a good idea to just chmod 000 your PerlCal scripts. ---------------------------------------------------------- Stan a.k.a. ThePike stanat_private http://www.whizkunde.org Copyright whizkunde security team 2001
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