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Ubuntu 11.04: USN-1197-6 High Severity: Qt Certificate Authority Issue

A certificate authority mis-issued fraudulent certificates.. =========================================================================Ubuntu Security Notice USN-1197-6 September 22, 2011 qt4-x11 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS Summary: A certificate authority mis-issued fraudulent certificates. Software Description: - qt4-x11: Qt 4 libraries and support modules Details: USN-1197-1 and USN-1197-3 addressed an issue in Firefox and Xulrunner pertaining to the Dutch Certificate Authority DigiNotar mis-issuing fraudulent certificates. This update provides an update for 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://bugs.launchpad.net/ubuntu/+source/firefox/+bug/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 andwere not previously blocked. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.04: libqt4-network 4:4.7.2-0ubuntu6.3 Ubuntu 10.10: libqt4-network 4:4.7.0-0ubuntu4.4 Ubuntu 10.04 LTS: libqt4-network 4:4.6.2-0ubuntu5.3 After a standard system upgrade you need to restart your session to effect the necessary changes. References: https://ubuntu.com/security/notices/USN-1197-6 https://ubuntu.com/security/notices/USN-1197-1 https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/837557 Package Information: https://launchpad.net/ubuntu/+source/qt4-x11/4:4.7.2-0ubuntu6.3 https://launchpad.net/ubuntu/+source/qt4-x11/4:4.7.0-0ubuntu4.4 https://launchpad.net/ubuntu/+source/qt4-x11/4:4.6.2-0ubuntu5.3 . Concerning the problem of unauthorized certificates released by a certificate authority affecting Ubuntu's Qt frameworks.. Qt Vulnerability, Certificate Misissuance, Fraudulent Certificates. . LinuxSecurity.com Team

Sep 22, 2011 Ubuntu