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[R1] Tenable Plugin Feed ID #202212081952 Fixes Arbitrary Code Execution Vulnerability

Critical
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Synopsis

Audit files that are built into the Tenable products provide capability to adjust the audit evaluation to meet organizational requirements. A vulnerability was reported where through modifying the scan variables, an authenticated user in Tenable products, that has Scan Policy Configuration roles, could manipulate audit policy variables to execute arbitrary commands on credentialed scan targets.

CVE-2022-4313

This vulnerability only includes built-in audits that are selected through the product interfaces. It does not include custom audits that are uploaded by the customer.

Solution

Tenable has released updated compliance plugins and audit files that will validate customer entered values against defined variable types. The plugins have been distributed via the Tenable plugin feed 202212081952 or later. Audits have been distributed to the products through the standard channels with the following notes:

Tenable.io has been updated with the plugins and content necessary to remediate this vulnerability.
Tenable.sc updates are distributed in the feed and activated when the customer uses the new template.
Nessus version 10.4.2 or later will have the updated audit content.

Users of earlier versions can perform a manual update of the audit warehouse to obtain the content. Please refer to the additional resources below for more information.

Additional References

https://www.tenable.com/blog/compliance-what-you-need-to-know-about-configuration-audit-variables
https://docs.tenable.com/tenablesc/Content/ManageAuditFiles.htm
https://docs.tenable.com/nessus/Content/UpdateAuditWarehouseManually.htm

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 [email protected]

Risk Information

CVE ID: CVE-2022-4313
Tenable Advisory ID: TNS-2023-14
Risk Factor: Critical
Credit:
Ayman Abdul Kareem (unpluggedsec)
CVSSv3 Base / Temporal Score:
9.1 / 8.2
CVSSv3 Vector:
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

Affected Products

tenable.sc
tenable.io
Nessus

Disclosure Timeline

2022-08-25 - Report received by Tenable
2022-09-01 - Report confirmed as valid
2022-10-19 - CVE ID requested / CVSS v3 scoring calculated
2023-03-10 - All fixes across multiple products deployed

Advisory Timeline

2023-03-13 - [R1] Initial Release
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