vicious-extensions/ve-misc.c in GNOME Display Manager (gdm) 2.20.x before 2.20.11, when GDM debug is enabled, logs the user password when it contains invalid UTF8 encoded characters, which might allow local users to gain privileges by reading the information from syslog logs.
https://exchange.xforce.ibmcloud.com/vulnerabilities/60642
https://bugzilla.gnome.org/show_bug.cgi?id=571846
https://blogs.oracle.com/sunsecurity/entry/cve_2010_2387_password_disclosure
http://www.auscert.org.au/13123
http://secunia.com/advisories/40780
http://secunia.com/advisories/40690
http://ftp.gnome.org/pub/GNOME/sources/gdm/2.20/gdm-2.20.11.changes