The glibcbug script in glibc 2.3.4 and earlier allows local users to overwrite arbitrary files via a symlink attack on temporary files, a different vulnerability than CVE-2004-0968.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-1379
http://www.redhat.com/support/errata/RHSA-2005-261.html
http://www.mandriva.com/security/advisories?name=MDKSA-2004:159