Security updates for Thursday

Fedora has updated chrony (F18: two vulnerabilities), firefox (F18: multiple vulnerabilities), gnupg (F18: information leak), python-keystoneclient (F19: multiple vulnerabilities), samba (F18: multiple vulnerabilities), smokeping (F18; F19: two XSS vulnerabilities), spice (F18: denial of service), subversion (F18: multiple vulnerabilities), thunderbird (F18: multiple vulnerabilities), v8 (F18; F19: denial of service or unspecified other impact), and xulrunner (F18: multiple vulnerabilities).

Ubuntu has updated libimobiledevice (12.10, 13.04: file overwrite and device key access).