AmazonALAS2-2021-1663Medium: microcode_ctl
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.9 Medium
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
13.1%
Issue Overview:
A flaw was found in the Intel Advanced Vector Extensions (AVX) implementation, where a local authenticated attacker with the ability to execute AVX instructions can gather the AVX register state from previous AVX executions. This vulnerability allows information disclosure of the AVX register state. (CVE-2020-8696)
Affected Packages:
microcode_ctl
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update microcode_ctl to update your system.
New Packages:
i686:
microcode_ctl-2.1-47.amzn2.0.9.i686
microcode_ctl-debuginfo-2.1-47.amzn2.0.9.i686
src:
microcode_ctl-2.1-47.amzn2.0.9.src
x86_64:
microcode_ctl-2.1-47.amzn2.0.9.x86_64
microcode_ctl-debuginfo-2.1-47.amzn2.0.9.x86_64
Additional References
Red Hat: CVE-2020-8696
Mitre: CVE-2020-8696
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Amazon Linux | 2 | i686 | microcode_ctl | < 2.1-47.amzn2.0.9 | microcode_ctl-2.1-47.amzn2.0.9.i686.rpm |
| Amazon Linux | 2 | i686 | microcode_ctl-debuginfo | < 2.1-47.amzn2.0.9 | microcode_ctl-debuginfo-2.1-47.amzn2.0.9.i686.rpm |
| Amazon Linux | 2 | x86_64 | microcode_ctl | < 2.1-47.amzn2.0.9 | microcode_ctl-2.1-47.amzn2.0.9.x86_64.rpm |
| Amazon Linux | 2 | x86_64 | microcode_ctl-debuginfo | < 2.1-47.amzn2.0.9 | microcode_ctl-debuginfo-2.1-47.amzn2.0.9.x86_64.rpm |
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.9 Medium
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
13.1%