drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Preisgabe von Informationen in amd64-microcode (Aktualisierung)
Name: |
Preisgabe von Informationen in amd64-microcode (Aktualisierung) |
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ID: |
USN-3690-2 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 LTS |
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Datum: |
Fr, 6. Juli 2018, 07:17 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715 |
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Applikationen: |
amd64-microcode |
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Update von: |
Preisgabe von Informationen in amd64-microcode |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-3690-2 July 05, 2018
amd64-microcode regression ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary:
The system could be made to expose sensitive information.
Software Description: - amd64-microcode: Processor microcode firmware for AMD CPUs
Details:
USN-3690-1 provided updated microcode for AMD processors to address CVE-2017-5715 (aka Spectre). Unfortunately, the update caused some systems to fail to boot. This update reverts the update for Ubuntu 14.04 LTS.
We apologize for the inconvenience.
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.
This update provides the microcode updates for AMD 17H family processors required for the corresponding Linux kernel updates.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04 LTS: amd64-microcode 3.20180524.1~ubuntu0.14.04.2+really20130710.1
After a standard system update you need to reboot your computer to make all the necessary changes.
References: https://usn.ubuntu.com/usn/usn-3690-2 https://usn.ubuntu.com/usn/usn-3690-1 https://launchpad.net/bugs/1779092
Package Information: https://launchpad.net/ubuntu/+source/amd64-microcode/3.20180524.1~ubuntu0.14.04.2+really20130710.1
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