MacOSXLabs RsyncX 2.1 Insecure Temporary File Creation Vulnerability. Local exploit for osx platform
source: http://www.securityfocus.com/bid/11212/info RsyncX is reported to contain an insecure temporary file creation vulnerability. The result of this is that temporary files created by the application may use predictable filenames. A local attacker may exploit this vulnerability to execute symbolic link file overwrite attacks. When using the scheduler component of RsyncX, /tmp/cron_rsyncxtmp is insecurely used. A user can create a dir /tmp/blahdir, then ln -s /tmp/blahdir/file /tmp/cron.rsyncxtmp After RsyncX scheduler is used by an admin, /etc/crontab will become a symlink pointing to /tmp/blahdir/file.