SECURITY

USN-3385-1: Linux kernel vulnerabilities Ubuntu Security Notice USN-3385-1 10th August, 2017 linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 16.04 LTS Summary Several security issues were fixed in the Linux kernel. Software description linux – Linux kernel linux-aws – Linux kernel for Amazon Web Services (AWS) systems linux-gke – Linux kernel for Google Container Engine (GKE) systems linux-raspi2 – Linux kernel for Raspberry Pi 2 linux-snapdragon – Linux kernel for Snapdragon processors Details Andrey Konovalov discovered a race condition in the UDP FragmentationOffload (UFO) code in the Linux kernel. A local attacker could use this tocause a denial of service or execute arbitrary code. (CVE-2017-1000112) Andrey Konovalov discovered a race condition in AF_PACKET socket optionhandling code in the Linux kernel. A local unprivileged attacker could usethis to cause a denial [ more… ]

USN-3389-2: GD vulnerability Ubuntu Security Notice USN-3389-2 14th August, 2017 libgd2 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary The system could be made to expose sensitive information. Software description libgd2 – GD Graphics Library Details USN-3389-1 fixed a vulnerability in GD Graphics Library.This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: A vulnerability was discovered in GD Graphics Library (aka libgd), as used in PHP that does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read bytes from the top of the stack. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 12.04 LTS: libgd-tools 2.0.36~rc1~dfsg-6ubuntu2.5 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system [ more… ]

USN-3389-1: GD vulnerability Ubuntu Security Notice USN-3389-1 14th August, 2017 libgd2 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary The system could be made to expose sensitive information. Software description libgd2 – GD Graphics Library Details A vulnerability was discovered in GD Graphics Library (aka libgd),as used in PHP that does not zero colorMap arrays before use.A specially crafted GIF image could use the uninitialized tables toread bytes from the top of the stack. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.04: libgd-tools 2.2.4-2ubuntu0.2 Ubuntu 16.04 LTS: libgd-tools 2.1.1-4ubuntu0.16.04.7 Ubuntu 14.04 LTS: libgd-tools 2.1.0-3ubuntu0.7 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-2017-7890 [ more… ]

USN-3388-1: Subversion vulnerabilities Ubuntu Security Notice USN-3388-1 11th August, 2017 subversion vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Several security issues were fixed in Subversion. Software description subversion – Advanced version control system Details Joern Schneeweisz discovered that Subversion did not properly handlehost names in 'svn+ssh://' URLs. A remote attacker could use thisto construct a subversion repository that when accessed could runarbitrary code with the privileges of the user. (CVE-2017-9800) Daniel Shahaf and James McCoy discovered that Subversion did notproperly verify realms when using Cyrus SASL authentication. Aremote attacker could use this to possibly bypass intended accessrestrictions. This issue only affected Ubuntu 14.04 LTS and Ubuntu16.04 LTS. (CVE-2016-2167) Florian Weimer discovered that Subversion clients did not properlyrestrict XML entity expansion when accessing http(s):// URLs. A remoteattacker [ more… ]