drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Linux
Name: |
Zwei Probleme in Linux |
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ID: |
USN-3234-2 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 LTS |
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Datum: |
Mi, 15. März 2017, 23:19 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5551
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-10208 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-3234-2 March 15, 2017
linux-lts-xenial vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description: - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
USN-3234-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS.
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 14.04 LTS: linux-image-4.4.0-67-generic 4.4.0-67.88~14.04.1 linux-image-4.4.0-67-generic-lpae 4.4.0-67.88~14.04.1 linux-image-4.4.0-67-lowlatency 4.4.0-67.88~14.04.1 linux-image-4.4.0-67-powerpc-e500mc 4.4.0-67.88~14.04.1 linux-image-4.4.0-67-powerpc-smp 4.4.0-67.88~14.04.1 linux-image-4.4.0-67-powerpc64-emb 4.4.0-67.88~14.04.1 linux-image-4.4.0-67-powerpc64-smp 4.4.0-67.88~14.04.1 linux-image-generic-lpae-lts-xenial 4.4.0.67.54 linux-image-generic-lts-xenial 4.4.0.67.54 linux-image-lowlatency-lts-xenial 4.4.0.67.54 linux-image-powerpc-e500mc-lts-xenial 4.4.0.67.54 linux-image-powerpc-smp-lts-xenial 4.4.0.67.54 linux-image-powerpc64-emb-lts-xenial 4.4.0.67.54 linux-image-powerpc64-smp-lts-xenial 4.4.0.67.54
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-3234-2 http://www.ubuntu.com/usn/usn-3234-1 CVE-2016-10208, CVE-2017-5551
Package Information: https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-67.88~14.04.1
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