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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).

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

Tenable Advisory ID: TNS-2022-17
Risk Factor: High
Credit:
Phil Castellanos (CVE-2022-32973)
Tudor Enache (CVE-2022-32974)
CVSSv3 Base / Temporal Score:
8.4 / 7.6 (CVE-2022-32973)
4.2 / 3.8 (CVE-2022-32974)
CVSSv3 Vector:
AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C/CR:X/IR:X/AR:X/MAV:N/MAC:L/MPR:H/MUI:R/MS:C/MC:H/MI:H/MA:H (CVE-2022-32973)
AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C/CR:H/IR:X/AR:X/MAV:N/MAC:H/MPR:H/MUI:R/MS:U/MC:H/MI:N/MA:N (CVE-2022-32974)

Affected Products

Nessus Agent 8.3.3 and earlier

Advisory Timeline

2022-08-25 - [R1] Initial Release