The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://www.mozilla.org/security/announce/2011/mfsa2011-12.html http://www.mozilla.org/security/announce/2011/mfsa2011-13.html http://www.mozilla.org/security/announce/2011/mfsa2011-14.html http://www.mozilla.org/security/announce/2011/mfsa2011-15.html http://www.mozilla.org/security/announce/2011/mfsa2011-16.html http://www.mozilla.org/security/announce/2011/mfsa2011-17.html http://www.mozilla.org/security/announce/2011/mfsa2011-18.html http://www.vuxml.org/freebsd/04b7d46c-7226-11e0-813a-6c626dd55a41.html

The following packages are affected: firefox libxul linux-firefox linux-firefox-devel linux-seamonkey seamonkey