ibackup 2.27 allows local users to overwrite arbitrary files via a symlink attack on temporary files.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45852
https://bugs.gentoo.org/show_bug.cgi?id=235770
http://www.openwall.com/lists/oss-security/2008/10/30/2
http://lists.debian.org/debian-devel/2008/08/msg00271.html
http://dev.gentoo.org/~rbu/security/debiantemp/ibackup