drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-2908-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 15.10 |
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Datum: |
Di, 23. Februar 2016, 08:54 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1575
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4312
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8785
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2069
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1576 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2908-1 February 22, 2016
linux vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
Summary:
Several security issues were fixed in the kernel.
Software Description: - linux: Linux kernel
Details:
halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1576)
halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. (CVE-2016-1575)
It was discovered that the Linux kernel did not properly enforce rlimits for file descriptors sent over UNIX domain sockets. A local attacker could use this to cause a denial of service. (CVE-2013-4312)
It was discovered that the Linux kernel's Filesystem in Userspace (FUSE) implementation did not handle initial zero length segments properly. A local attacker could use this to cause a denial of service (unkillable task). (CVE-2015-8785)
Andy Lutomirski discovered a race condition in the Linux kernel's translation lookaside buffer (TLB) handling of flush events. A local attacker could use this to cause a denial of service or possibly leak sensitive information. (CVE-2016-2069)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.10: linux-image-4.2.0-30-generic 4.2.0-30.35 linux-image-4.2.0-30-generic-lpae 4.2.0-30.35 linux-image-4.2.0-30-lowlatency 4.2.0-30.35 linux-image-4.2.0-30-powerpc-e500mc 4.2.0-30.35 linux-image-4.2.0-30-powerpc-smp 4.2.0-30.35 linux-image-4.2.0-30-powerpc64-emb 4.2.0-30.35 linux-image-4.2.0-30-powerpc64-smp 4.2.0-30.35
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-2908-1 CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
Package Information: https://launchpad.net/ubuntu/+source/linux/4.2.0-30.35
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