You are here
Home > Preporuke > Sigurnosni nedostaci programskog paketa intel-microcode

Sigurnosni nedostaci programskog paketa intel-microcode

  • Detalji os-a: WN7
  • Važnost: IMP
  • Operativni sustavi: L
  • Kategorije: LUB

==========================================================================
Ubuntu Security Notice USN-4385-1
June 09, 2020

intel-microcode vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 20.04 LTS
– Ubuntu 19.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Intel Microcode.

Software Description:
– intel-microcode: Processor microcode for Intel CPUs

Details:

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)

It was discovered that on some Intel processors, partial data values
previously read from a vector register on a physical core may be propagated
into unused portions of the store buffer. A local attacker could possible
use this to expose sensitive information. (CVE-2020-0548)

It was discovered that on some Intel processors, data from the most
recently evicted modified L1 data cache (L1D) line may be propagated into
an unused (invalid) L1D fill buffer. A local attacker could possibly use
this to expose sensitive information. (CVE-2020-0549)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
intel-microcode 3.20200609.0ubuntu0.20.04.0

Ubuntu 19.10:
intel-microcode 3.20200609.0ubuntu0.19.10.0

Ubuntu 18.04 LTS:
intel-microcode 3.20200609.0ubuntu0.18.04.0

Ubuntu 16.04 LTS:
intel-microcode 3.20200609.0ubuntu0.16.04.0

Ubuntu 14.04 ESM:
intel-microcode 3.20200609.0ubuntu0.14.04.0

After a standard system update you need to reboot your computer to
make all the necessary changes.

References:
https://usn.ubuntu.com/4385-1
CVE-2020-0543, CVE-2020-0548, CVE-2020-0549,
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SRBDS

Package Information:
https://launchpad.net/ubuntu/+source/intel-microcode/3.20200609.0ubuntu0.20.04.0
https://launchpad.net/ubuntu/+source/intel-microcode/3.20200609.0ubuntu0.19.10.0
https://launchpad.net/ubuntu/+source/intel-microcode/3.20200609.0ubuntu0.18.04.0
https://launchpad.net/ubuntu/+source/intel-microcode/3.20200609.0ubuntu0.16.04.0

—–BEGIN PGP SIGNATURE—–
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=Bcy/
—–END PGP SIGNATURE—–

AutorGoran Culibrk
Cert idNCERT-REF-2020-06-0001-ADV
CveCERT-CVE-DUMMY
ID izvornikaCERT-ORIGID-DUMMY
ProizvodCERT-DUMMY-PRODUCT
IzvorAdobe
Top
More in Preporuke
Sigurnosni nedostatak programskog paketa GnuTLS

Otkriven je sigurnosni nedostatak u programskom paketu GnuTLS za operacijski sustav Gentoo. Otkriveni nedostatak potencijalnim napadačima omogućuje otkrivanje osjetljivih informacija....

Close