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Ubuntu 16.04 LTS USN-3116-1: DBus Denial of Service Issues

Several security issues were fixed in DBus.. =========================================================================Ubuntu Security Notice USN-3116-1 November 01, 2016 dbus vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: Several security issues were fixed in DBus. Software Description: - dbus: simple interprocess messaging system Details: It was discovered that DBus incorrectly validated the source of ActivationFailure signals. A local attacker could use this issue to cause a denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-0245) It was discovered that DBus incorrectly handled certain format strings. A local attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. This issue is only exposed to unprivileged users when the fix for CVE-2015-0245 is not applied, hence this issue is only likely to affect Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Ubuntu 16.04 LTS and Ubuntu 16.10 have been updated as a preventative measure in the event that a new attack vector for this issue is discovered. (No CVE number) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: dbus 1.10.10-1ubuntu1.1 libdbus-1-3 1.10.10-1ubuntu1.1 Ubuntu 16.04 LTS: dbus 1.10.6-1ubuntu3.1 libdbus-1-3 1.10.6-1ubuntu3.1 Ubuntu 14.04 LTS: dbus 1.6.18-0ubuntu4.4 libdbus-1-3 1.6.18-0ubuntu4.4 Ubuntu 12.04 LTS: dbus 1.4.18-1ubuntu1.8 libdbus-1-3 1.4.18-1ubuntu1.8 After a standard system update you need to reboot your computer to make all thenecessary changes. References: https://ubuntu.com/security/notices/USN-3116-1 CVE-2015-0245 Package Information: https://launchpad.net/ubuntu/+source/dbus/1.10.10-1ubuntu1.1 https://launchpad.net/ubuntu/+source/dbus/1.10.6-1ubuntu3.1 https://launchpad.net/ubuntu/+source/dbus/1.6.18-0ubuntu4.4 https://launchpad.net/ubuntu/+source/dbus/1.4.18-1ubuntu1.8 . Several DBus flaws resolved in Ubuntu 16.10 and prior releases, affecting interprocess communication reliability and security.. DBus Issues, Security Advisory, Ubuntu Update, Denial of Service, Messaging System. . Severity: Important. LinuxSecurity.com Team

Nov 01, 2016 •Important Ubuntu