SECURITY

USN-3843-2: pixman vulnerability pixman vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 ESM Summary pixman could be made to crash or run programs if it processed specially crafted instructions. Software Description pixman – pixel-manipulation library for X and cairo Details USN-3843-1 fixed a vulnerability in pixman. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that pixman incorrectly handled the general_composite_rect function. A remote attacker could use this issue to cause pixman to crash, resulting in a denial of service, or possibly execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM libpixman-1-0 – 0.30.2-1ubuntu0.0.0.0.4 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart your session [ more… ]

USN-3843-1: pixman vulnerability pixman vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 14.04 LTS Summary pixman could be made to crash or run programs if it processed specially crafted instructions. Software Description pixman – pixel-manipulation library for X and cairo Details It was discovered that pixman incorrectly handled the general_composite_rect function. A remote attacker could use this issue to cause pixman to crash, resulting in a denial of service, or possibly execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS libpixman-1-0 – 0.30.2-2ubuntu1.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart your session to make all the necessary changes. References CVE-2015-5297 Source: USN-3843-1: pixman vulnerability

USN-3837-2: poppler regression poppler regression A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary USN-3837-1 introduced a regression in poppler. Software Description poppler – PDF rendering library Details USN-3837-1 fixed vulnerabilities in poppler. A regression was reported regarding the previous update. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-16646) It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-19149) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu [ more… ]

USN-3842-1: CUPS vulnerability cups vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary CUPS could be made to expose sensitive information. Software Description cups – Common UNIX Printing System™ Details Jann Horn discovered that CUPS incorrectly handled session cookie randomness. A remote attacker could possibly use this issue to perform cross-site request forgery (CSRF) attacks. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 cups – 2.2.8-5ubuntu1.1 Ubuntu 18.04 LTS cups – 2.2.7-1ubuntu2.2 Ubuntu 16.04 LTS cups – 2.1.3-4ubuntu0.6 Ubuntu 14.04 LTS cups – 1.7.2-0ubuntu1.11 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References CVE-2018-4700 Source: USN-3842-1: CUPS vulnerability