drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-3581-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 17.10 |
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Datum: |
Do, 22. Februar 2018, 14:37 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17712
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15115
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8824 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-3581-1 February 22, 2018
linux vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.10
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux: Linux kernel
Details:
Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712)
ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol 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-2017-15115)
Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol 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-2017-8824)
USN-3541-1 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 17.10. This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures. Original advisory details:
Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 17.10: linux-image-4.13.0-36-generic 4.13.0-36.40 linux-image-4.13.0-36-generic-lpae 4.13.0-36.40 linux-image-4.13.0-36-lowlatency 4.13.0-36.40 linux-image-generic 4.13.0.36.38 linux-image-generic-lpae 4.13.0.36.38 linux-image-lowlatency 4.13.0.36.38
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://usn.ubuntu.com/usn/usn-3581-1 CVE-2017-15115, CVE-2017-17712, CVE-2017-5715, CVE-2017-8824
Package Information: https://launchpad.net/ubuntu/+source/linux/4.13.0-36.40
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