About Ubuntu

=========================================================== Ubuntu Security Notice USN-517-1 September 24, 2007 kdebase vulnerability CVE-2007-4569 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 6.10 Ubuntu 7.04 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: kdm 4:3.5.2-0ubuntu27.2 Ubuntu 6.10: kdm 4:3.5.5-0ubuntu3.6 Ubuntu 7.04: kdm 4:3.5.6-0ubuntu20.4 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: It was discovered that KDM would allow logins without password checks under certain circumstances. If autologin was configured, and "shutdown with password" enabled, a local user could exploit the problem and gain root privileges.