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Ubuntu alert USN-1175-1 (libpng)
========================================================================== Ubuntu Security Notice USN-1175-1 July 26, 2011 libpng vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS - Ubuntu 8.04 LTS Summary: Libpng could be made to run programs as your login if it opened a specially crafted file. Software Description: - libpng: PNG (Portable Network Graphics) file library Details: Frank Busse discovered that libpng did not properly handle certain malformed PNG images. If a user or automated system were tricked into opening a crafted PNG file, an attacker could cause libpng to crash, resulting in a denial of service. This issue only affected Ubuntu 10.04 LTS, 10.10, and 11.04. (CVE-2011-2501) It was discovered that libpng did not properly handle certain malformed PNG images. If a user or automated system were tricked into opening a crafted PNG file, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2011-2690) Frank Busse discovered that libpng did not properly handle certain PNG images with invalid sCAL chunks. If a user or automated system were tricked into opening a crafted PNG file, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2011-2692) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.04: libpng12-0 1.2.44-1ubuntu3.1 Ubuntu 10.10: libpng12-0 1.2.44-1ubuntu0.1 Ubuntu 10.04 LTS: libpng12-0 1.2.42-1ubuntu2.2 Ubuntu 8.04 LTS: libpng12-0 1.2.15~beta5-3ubuntu0.4 After a standard system update you need to reboot your computer to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1175-1 CVE-2011-2501, CVE-2011-2690, CVE-2011-2692 Package Information: https://launchpad.net/ubuntu/+source/libpng/1.2.44-1ubunt... https://launchpad.net/ubuntu/+source/libpng/1.2.44-1ubunt... https://launchpad.net/ubuntu/+source/libpng/1.2.42-1ubunt... https://launchpad.net/ubuntu/+source/libpng/1.2.15~beta5-... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security... (Log in to post comments)
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