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HistoryApr 18, 2022 - 7:43 p.m.

Important: log4j-cve-2021-44228-hotpatch

2022-04-1819:43:00
alas.aws.amazon.com
314

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

10 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.9 High

AI Score

Confidence

High

0.976 High

EPSS

Percentile

100.0%

Issue Overview:

The Apache Log4j hotpatch package starting with log4j-cve-2021-44228-hotpatch-1.1-16 will now explicitly mimic the Linux capabilities and cgroups of the target Java process that the hotpatch is applied to.

In order to mimic the Linux capabilities of the target process, Amazon Linux 1 customers need to be running kernel version 4.14.275-142.503 or later, while Amazon Linux 2 customers on ARM need to be running kernel versions 4.14.275-207.503, 5.4.188-104.359, 5.10.109-104.500 or later. Amazon Linux 2 customers on Intel or AMD instances do not need an updated kernel. (CVE-2022-0070)

Affected Packages:

log4j-cve-2021-44228-hotpatch

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 log4j-cve-2021-44228-hotpatch to update your system.

New Packages:

noarch:  
    log4j-cve-2021-44228-hotpatch-1.1-16.amzn2.noarch  
  
src:  
    log4j-cve-2021-44228-hotpatch-1.1-16.amzn2.src  

Additional References

Red Hat: CVE-2022-0070

Mitre: CVE-2022-0070

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

10 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.9 High

AI Score

Confidence

High

0.976 High

EPSS

Percentile

100.0%