drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Linux
Name: |
Zwei Probleme in Linux |
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ID: |
USN-3234-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 16.04 LTS |
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Datum: |
Mi, 15. März 2017, 23:20 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-10208
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5551 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-3234-1 March 15, 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 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:
Ralf Spenneberg discovered that the ext4 implementation in the Linux kernel did not properly validate meta block groups. An attacker with physical access could use this to specially craft an ext4 image that causes a denial of service (system crash). (CVE-2016-10208)
It was discovered that the Linux kernel did not clear the setgid bit during a setxattr call on a tmpfs filesystem. A local attacker could use this to gain elevated group privileges. (CVE-2017-5551)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 LTS: linux-image-4.4.0-1006-gke 4.4.0-1006.6 linux-image-4.4.0-1009-aws 4.4.0-1009.18 linux-image-4.4.0-1048-raspi2 4.4.0-1048.55 linux-image-4.4.0-1051-snapdragon 4.4.0-1051.55 linux-image-4.4.0-67-generic 4.4.0-67.88 linux-image-4.4.0-67-generic-lpae 4.4.0-67.88 linux-image-4.4.0-67-lowlatency 4.4.0-67.88 linux-image-4.4.0-67-powerpc-e500mc 4.4.0-67.88 linux-image-4.4.0-67-powerpc-smp 4.4.0-67.88 linux-image-4.4.0-67-powerpc64-emb 4.4.0-67.88 linux-image-4.4.0-67-powerpc64-smp 4.4.0-67.88 linux-image-aws 4.4.0.1009.11 linux-image-generic 4.4.0.67.72 linux-image-generic-lpae 4.4.0.67.72 linux-image-gke 4.4.0.1006.7 linux-image-lowlatency 4.4.0.67.72 linux-image-powerpc-e500mc 4.4.0.67.72 linux-image-powerpc-smp 4.4.0.67.72 linux-image-powerpc64-emb 4.4.0.67.72 linux-image-powerpc64-smp 4.4.0.67.72 linux-image-raspi2 4.4.0.1048.48 linux-image-snapdragon 4.4.0.1051.44
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
References: http://www.ubuntu.com/usn/usn-3234-1 CVE-2016-10208, CVE-2017-5551
Package Information: https://launchpad.net/ubuntu/+source/linux/4.4.0-67.88 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1009.18 https://launchpad.net/ubuntu/+source/linux-gke/4.4.0-1006.6 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1048.55 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1051.55
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