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ubuntuUbuntuUSN-6319-1
HistoryAug 30, 2023 - 12:00 a.m.

AMD Microcode vulnerability

2023-08-3000:00:00
ubuntu.com
35

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

6.9 Medium

AI Score

Confidence

Low

1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:H/Au:S/C:P/I:N/A:N

0.0004 Low

EPSS

Percentile

8.9%

JSON

Releases

  • Ubuntu 23.04
  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • amd64-microcode - Processor microcode firmware for AMD CPUs

Details

Daniël Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD
processors utilising speculative execution and branch prediction may allow
unauthorised memory reads via a speculative side-channel attack. A local
attacker could use this to expose sensitive information, including kernel
memory.

OSVersionArchitecturePackageVersionFilename
Ubuntu23.04noarchamd64-microcode< 3.20220411.1ubuntu3.2UNKNOWN
Ubuntu22.04noarchamd64-microcode< 3.20191218.1ubuntu2.2UNKNOWN
Ubuntu20.04noarchamd64-microcode< 3.20191218.1ubuntu1.2UNKNOWN
Ubuntu18.04noarchamd64-microcode< 3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm2UNKNOWN
Ubuntu18.04noarchamd64-microcode< 3.20191021.1+really3.20181128.1~ubuntu0.18.04.1UNKNOWN
Ubuntu16.04noarchamd64-microcode< 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm2UNKNOWN
Ubuntu16.04noarchamd64-microcode< 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2UNKNOWN

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4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

6.9 Medium

AI Score

Confidence

Low

1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:H/Au:S/C:P/I:N/A:N

0.0004 Low

EPSS

Percentile

8.9%

JSON
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