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                                 CERT-Renater

                     Note d'Information No. 2022/VULN292

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DATE                : 26/08/2022

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Nessus Agent versions prior to
                                     8.3.4.

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https://www.tenable.com/security/tns-2022-17
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[R1] Nessus Agent Version 8.3.4 Fixes Multiple Vulnerabilities

High


Synopsis


Custom audit files bring tremendous power and flexibility when assessing
the configuration of your assets. Two separate vulnerabilities that
utilize this custom Audit functionality were identified, reported and
fixed. With the release of Nessus Agent 8.3.4, Tenable has mitigated the
reported issues by enabling the ability to sign and verify custom audit
files.

1. CVE-2022-32973 - An authenticated attacker could create an audit file
that bypasses PowerShell cmdlet checks and executes commands   with
administrator privileges.

2. CVE-2022-32974 - An authenticated attacker could read arbitrary files
from the underlying operating system of the scanner using a custom
crafted compliance audit file without providing any valid   SSH
credentials.

Additional details on the custom audit signing functionality can be
found here:
https://community.tenable.com/s/article/Audit-Signing-Overview


Solution

Tenable has released Nessus Agent 8.3.4 which enables the features to
address these issues. The installation files can be obtained from the
Tenable Downloads Portal (https://www.tenable.com/downloads/nessus-agents).


Additional References
https://community.tenable.com/s/article/Audit-Signing-Overview
https://www.tenable.com/downloads/nessus-agents


This page contains information regarding security vulnerabilities that
may impact Tenable's products. This may include issues specific to our
software, or due to the use of third-party libraries within our
software. Tenable strongly encourages users to ensure that they upgrade
or apply relevant patches in a timely manner.

Tenable takes product security very seriously. If you believe
   you have found a vulnerability in one of our products, we ask that you
please work with us to quickly resolve it in order to protect customers.
Tenable believes in responding quickly to
such reports, maintaining communication with researchers, and providing
a solution in short order.


For more details on submitting vulnerability information, please see our
Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email
advisories@tenable.com


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+ CERT-RENATER        |    tel : 01-53-94-20-44         +
+ 23/25 Rue Daviel    |    fax : 01-53-94-20-41         +
+ 75013 Paris         |   email:cert@support.renater.fr +
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