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amazonAmazonALAS2-2020-1478
HistoryAug 18, 2020 - 7:52 p.m.

Medium: gnome-shell

2020-08-1819:52:00
alas.aws.amazon.com
12

4.3 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

4.8 Medium

AI Score

Confidence

High

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

43.7%

Issue Overview:

It was discovered that the gnome-shell lock screen since version 3.15.91 did not properly restrict all contextual actions. An attacker with physical access to a locked workstation could invoke certain keyboard shortcuts, and potentially other actions. (CVE-2019-3820)

Affected Packages:

gnome-shell

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 gnome-shell to update your system.

New Packages:

aarch64:  
    gnome-shell-3.28.3-24.amzn2.aarch64  
    gnome-shell-debuginfo-3.28.3-24.amzn2.aarch64  
  
i686:  
    gnome-shell-3.28.3-24.amzn2.i686  
    gnome-shell-debuginfo-3.28.3-24.amzn2.i686  
  
src:  
    gnome-shell-3.28.3-24.amzn2.src  
  
x86_64:  
    gnome-shell-3.28.3-24.amzn2.x86_64  
    gnome-shell-debuginfo-3.28.3-24.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-3820

Mitre: CVE-2019-3820

4.3 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

4.8 Medium

AI Score

Confidence

High

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

43.7%