drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-2778-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 LTS |
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Datum: |
Di, 20. Oktober 2015, 22:48 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5156
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0272
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6937
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7312 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2778-1 October 20, 2015
linux-lts-vivid 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-vivid: Linux hardware enablement kernel from Vivid
Details:
It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. (CVE-2015-0272)
It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. (CVE-2015-5156)
It was discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel did not verify sockets were properly bound before attempting to send a message, which could cause a NULL pointer dereference. An attacker could use this to cause a denial of service (system crash). (CVE-2015-6937)
Ben Hutchings discovered that the Advanced Union Filesystem (aufs) for the Linux kernel did not correctly handle references of memory mapped files from an aufs mount. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2015-7312)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04 LTS: linux-image-3.19.0-31-generic 3.19.0-31.36~14.04.1 linux-image-3.19.0-31-generic-lpae 3.19.0-31.36~14.04.1 linux-image-3.19.0-31-lowlatency 3.19.0-31.36~14.04.1 linux-image-3.19.0-31-powerpc-e500mc 3.19.0-31.36~14.04.1 linux-image-3.19.0-31-powerpc-smp 3.19.0-31.36~14.04.1 linux-image-3.19.0-31-powerpc64-emb 3.19.0-31.36~14.04.1 linux-image-3.19.0-31-powerpc64-smp 3.19.0-31.36~14.04.1
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. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.
References: http://www.ubuntu.com/usn/usn-2778-1 CVE-2015-0272, CVE-2015-5156, CVE-2015-6937, CVE-2015-7312
Package Information: https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-31.36~14.04.1
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