Format string vulnerability in the host chooser window (gdmchooser) in GNOME Foundation Display Manager (gdm) allows local users to execute arbitrary code via format string specifiers in a hostname, which are used in an error dialog.
https://exchange.xforce.ibmcloud.com/vulnerabilities/30896
http://www.vupen.com/english/advisories/2006/5015
http://www.ubuntu.com/usn/usn-396-1
http://www.securityfocus.com/bid/21597
http://www.novell.com/linux/security/advisories/2006_29_sr.html
http://www.mandriva.com/security/advisories?name=MDKSA-2006:231
http://securitytracker.com/id?1017383
http://securitytracker.com/id?1017320
http://secunia.com/advisories/23409
http://secunia.com/advisories/23387
http://secunia.com/advisories/23385
http://secunia.com/advisories/23381
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=453
http://ftp.acc.umu.se/pub/GNOME/sources/gdm/2.17/gdm-2.17.4.news