McAfee VirusScan for Mac (Virex) before 7.7 patch 1 has weak permissions (0666) for /Library/Application Support/Virex/VShieldExclude.txt, which allows local users to reconfigure Virex to skip scanning of arbitrary files.
osvdb.org/33798
secunia.com/advisories/24337
securityreason.com/securityalert/2342
www.securityfocus.com/archive/1/461485/100/0/threaded
www.securityfocus.com/bid/22744
www.securitytracker.com/id?1017707
www.vupen.com/english/advisories/2007/0777
knowledge.mcafee.com/SupportSite/dynamickc.do?externalId=518722&sliceId=SAL_Public&command=show&forward=nonthreadedKC&kcId=518722