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Amazon Linux AMI : log4j-cve-2021-44228-hotpatch (ALAS-2022-1601)
high Nessus Plugin ID 162308
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
The version of log4j-cve-2021-44228-hotpatch installed on the remote host is prior to 1.3-5. It is, therefore, affected by a vulnerability as referenced in the ALAS-2022-1601 advisory.Versions of the Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.3-5 are affected by a race condition that could lead to a local privilege escalation.
The Apache Log4j Hotpatch is not a replacement for updating to a log4j version that mitigates CVE-2021-44228 or CVE-2021-45046, it provides a temporary mitigation to CVE-2021-44228 by hotpatching local Java virtual machines. To do so, the hotpatch script iterates through all running Java processes, performs several checks, and executes the Java virtual machine with the same permissions and capabilities as the running process to load the hotpatch.
A local user could cause the hotpatch script to execute a binary with elevated privileges by running a custom java process which performs exec() of a set user ID binary after the hotpatch has observed the process path and before it has observed its effective user ID.
To leverage this issue a user must already have local access to the target system with permissions to run custom programs.
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update log4j-cve-2021-44228-hotpatch' to update your system.See Also
Plugin Details
Severity: High
ID: 162308
File Name: ala_ALAS-2022-1601.nasl
Version: 1.5
Type: local
Agent: unix
Published: 6/16/2022
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:log4j-cve-2021-44228-hotpatch, cpe:/o:amazon:linux
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Patch Publication Date: 6/13/2022
Vulnerability Publication Date: 12/10/2021