Detections
Analytics
Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: log4j12 (UTSA-2026-093019)
high Nessus Plugin ID 341217
Synopsis
The Unity Linux host is missing one or more security updates.Description
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-093019 advisory.JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.
Tenable has extracted the preceding description block directly from the Unity Linux 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
Update the affected log4j12 package.See Also
https://nvd.nist.gov/vuln/detail/CVE-2021-4104
Plugin Details
Severity: High
ID: 341217
File Name: unity_linux_UTSA-2026-093019.nasl
Version: 1.1
Type: Local
Published: 8/28/2026
Updated: 8/28/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.6
Percentile: 98.51
CVSS v2
Risk Factor: Medium
Base Score: 6
Temporal Score: 4.7
Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P
CVSS Score Source: CVE-2021-4104
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/6/2026
Vulnerability Publication Date: 12/14/2021
Reference Information
CVE: CVE-2021-4104