drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Linux
Name: |
Zwei Probleme in Linux |
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ID: |
USN-4393-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 ESM |
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Datum: |
Mi, 10. Juni 2020, 07:23 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12654
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0543 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4393-1 June 10, 2020
linux vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux: Linux kernel
Details:
It was discovered that the Marvell WiFi-Ex Driver in the Linux kernel did not properly validate status lengths in messages received from an access point, leading to a buffer overflow. A physically proximate attacker controlling an access point could use this to construct messages that could possibly result in arbitrary code execution. (CVE-2020-12654)
It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04 ESM: linux-image-3.2.0-147-generic 3.2.0-147.194 linux-image-3.2.0-147-generic-pae 3.2.0-147.194 linux-image-3.2.0-147-highbank 3.2.0-147.194 linux-image-3.2.0-147-powerpc-smp 3.2.0-147.194 linux-image-3.2.0-147-powerpc64-smp 3.2.0-147.194 linux-image-3.2.0-147-virtual 3.2.0-147.194 linux-image-generic 3.2.0.147.161 linux-image-generic-pae 3.2.0.147.161 linux-image-highbank 3.2.0.147.161 linux-image-powerpc 3.2.0.147.161 linux-image-powerpc-smp 3.2.0.147.161 linux-image-powerpc64-smp 3.2.0.147.161 linux-image-server 3.2.0.147.161 linux-image-virtual 3.2.0.147.161
Please note that the mitigation for CVE-2020-0543 requires a processor microcode update to be applied, either from your system manufacturer or via the intel-microcode package. The kernel update for this issue provides the ability to disable the mitigation and to report vulnerability status.
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/4393-1 CVE-2020-0543, CVE-2020-12654, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS
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