Ubuntu security

USN-3291-2: Linux kernel vulnerabilities Ubuntu Security Notice USN-3291-2 17th May, 2017 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 kernel. Software description 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 USN-3291-1 fixed vulnerabilities in the generic Linux kernel.This update provides the corresponding updates for the Linux kernelbuilt for specific processors and cloud environments. Dmitry Vyukov discovered that the generic SCSI (sg) subsystem in the Linuxkernel contained a stack-based buffer overflow. A local attacker withaccess to an sg device could use this to cause a denial of service (systemcrash) or possibly execute arbitrary code. [ more… ]

USN-3294-1: Bash vulnerabilities Ubuntu Security Notice USN-3294-1 17th May, 2017 bash vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Ubuntu 16.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Several security issues were fixed in Bash. Software description bash – GNU Bourne Again SHell Details Bernd Dietzel discovered that Bash incorrectly expanded the hostname whendisplaying the prompt. If a remote attacker were able to modify a hostname,this flaw could be exploited to execute arbitrary code. This issue onlyaffected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10.(CVE-2016-0634) It was discovered that Bash incorrectly handled the SHELLOPTS and PS4environment variables. A local attacker could use this issue to executearbitrary code with root privileges. This issue only affected Ubuntu 14.04LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543) It was discovered that Bash incorrectly handled the popd command. [ more… ]

USN-3299-1: Firefox update Ubuntu Security Notice USN-3299-1 25th May, 2017 firefox update A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Ubuntu 16.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Firefox was updated to a new version. Software description firefox – Mozilla Open Source web browser Details Some security information preloaded in Firefox was due to expire beforethe next scheduled release. This update bumps the expiration times. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.04: firefox 53.0.3+build1-0ubuntu0.17.04.2 Ubuntu 16.10: firefox 53.0.3+build1-0ubuntu0.16.10.2 Ubuntu 16.04 LTS: firefox 53.0.3+build1-0ubuntu0.16.04.2 Ubuntu 14.04 LTS: firefox 53.0.3+build1-0ubuntu0.14.04.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart Firefox to makeall the necessary changes. References LP: 1693502 Source: USN-3299-1: Firefox update

USN-3296-2: Samba vulnerability Ubuntu Security Notice USN-3296-2 24th May, 2017 samba vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary Samba could be made to run programs as an administrator. Software description samba – SMB/CIFS file, print, and login server for Unix Details USN-3296-1 fixed a vulnerability in Samba. This update provides thecorresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that Samba incorrectly handled shared libraries. A remote attacker could use this flaw to upload a shared library to a writable share and execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 12.04 LTS: samba 2:3.6.25-0ubuntu0.12.04.11 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 [ more… ]

USN-3298-2: MiniUPnP vulnerability Ubuntu Security Notice USN-3298-2 24th May, 2017 miniupnpc vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Summary MiniUPnP could be made to crash or run programs if it received specially crafted network traffic. Software description miniupnpc – UPnP IGD client lightweight library Details USN-3298-1 fixed a vulnerability in MiniUPnP. This update provides thecorresponding update for Ubuntu 17.04. Original advisory details: It was discovered that MiniUPnP incorrectly handled memory. A remote attacker could use this issue to cause a denial of service or possibly execute arbitrary code with privileges of the user running an application that uses the MiniUPnP library. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.04: libminiupnpc10 1.9.20140610-2ubuntu2.17.04.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a [ more… ]