USN-1197-1 and USN-1197-3 addressed an issue in Firefox and Xulrunnerpertaining to the Dutch Certificate Authority DigiNotar mis-issuingfraudulent certificates. This update provides an updatefor Qt that blacklists the known fraudulent certificates. Original advisory details: USN-1197-1 It was discovered that Dutch Certificate Authority DigiNotar had mis-issued multiple fraudulent certificates. These certificates could allow an attacker to perform a "man in the middle" (MITM) attack which would make the user believe their connection is secure, but is actually being monitored. For the protection of its users, Mozilla has removed the DigiNotar certificate. Sites using certificates issued by DigiNotar will need to seek another certificate vendor. We are currently aware of a regression that blocks one of two Staat der Nederlanden root certificates which are believed to still be secure. This regression is being tracked at https://launchpad.net/bugs/838322. USN-1197-3 USN-1197-1 partially addressed an issue with Dutch Certificate Authority DigiNotar mis-issuing fraudulent certificates. This update actively distrusts the DigiNotar root certificate as well as several intermediary certificates. Also included in this list of distrusted certificates are the "PKIOverheid" (PKIGovernment) intermediates under DigiNotar's control that did not chain to DigiNotar's root and were not previously blocked. The problem can be corrected by updating your system to the following package version: To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system upgrade you need to restart your session to effectthe necessary changes. LP: 837557, http://www.ubuntu.com/usn/usn-1197-3
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