drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-3468-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 17.04 |
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Datum: |
Di, 31. Oktober 2017, 16:18 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-10911
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14340
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11176
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-10663
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000252 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-3468-1 October 31, 2017
linux, linux-raspi2 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux: Linux kernel - linux-raspi2: Linux kernel for Raspberry Pi 2
Details:
It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service (host system crash). (CVE-2017-1000252)
It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-10663)
Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. (CVE-2017-10911)
It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-11176)
Dave Chinner discovered that the XFS filesystem did not enforce that the realtime inode flag was settable only on filesystems on a realtime device. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14340)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 17.04: linux-image-4.10.0-1020-raspi2 4.10.0-1020.23 linux-image-4.10.0-38-generic 4.10.0-38.42 linux-image-4.10.0-38-generic-lpae 4.10.0-38.42 linux-image-4.10.0-38-lowlatency 4.10.0-38.42 linux-image-generic 4.10.0.38.38 linux-image-generic-lpae 4.10.0.38.38 linux-image-lowlatency 4.10.0.38.38 linux-image-raspi2 4.10.0.1020.21
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: https://www.ubuntu.com/usn/usn-3468-1 CVE-2017-1000252, CVE-2017-10663, CVE-2017-10911, CVE-2017-11176, CVE-2017-14340
Package Information: https://launchpad.net/ubuntu/+source/linux/4.10.0-38.42 https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1020.23
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