BSD pppd allows local users to change the permissions of arbitrary files via a symlink attack on a file that is specified as a tty device.Referenceshttp://www.openbsd.org/errata31.htmlhttp://www.iss.net/security_center/static/9738.phpftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2002-010.txt.aschttp://marc.info/?l=bugtraq&m=102812546815606&w=2http://www.securityfocus.com/bid/5355
