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Ubuntu: 1352-1 Moderate: GPG Key Manipulation Risk in Software Properties

Software Properties could be tricked into installing arbitrary PPA GPG keys.. =========================================================================Ubuntu Security Notice USN-1352-1 January 31, 2012 software-properties vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.10 - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS Summary: Software Properties could be tricked into installing arbitrary PPA GPG keys. Software Description: - software-properties: manage the repositories that you install software from Details: David Black discovered that Software Properties incorrectly validated server certificates when performing secure connections to download PPA GPG key fingerprints. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to install altered package repository GPG keys. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: python-software-properties 0.81.13.3 Ubuntu 11.04: python-software-properties 0.80.9.1 Ubuntu 10.10: python-software-properties 0.76.7.1 Ubuntu 10.04 LTS: python-software-properties 0.75.10.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-1352-1 CVE-2011-4407 Package Information: https://launchpad.net/ubuntu/+source/software-properties/0.81.13.3 https://launchpad.net/ubuntu/+source/software-properties/0.80.9.1 https://launchpad.net/ubuntu/+source/software-properties/0.76.7.1 https://launchpad.net/ubuntu/+source/software-properties/0.75.10.2 . This notice highlights a vulnerability within Software Settings impacting Ubuntu systems, which allows for GPG key tampering.. Software Properties, GPG Keys, Ubuntu Threats. . Severity: Important. LinuxSecurity.com Team

Jan 31, 2012 •Important Ubuntu