spell-check-logic.cgi in Moodle 1.8.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/spell-check-debug.log, (2) /tmp/spell-check-before, or (3) /tmp/spell-check-after temporary file.Referenceshttp://www.securityfocus.com/bid/32402http://lists.debian.org/debian-devel/2008/08/msg00347.htmlhttp://uvw.ru/report.sid.txthttp://secunia.com/advisories/33955http://www.debian.org/security/2009/dsa-1724https://exchange.xforce.ibmcloud.com/vulnerabilities/46708