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[R1] Nessus Agent Version 10.4.3 Fixes Multiple Vulnerabilities

High
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Synopsis

Nessus Agent leverages third-party software to help provide underlying functionality. Several of the third-party components (OpenSSL, zlib) were found to contain vulnerabilities, and updated versions have been made available by the providers.

Out of caution and in line with best practice, Tenable has opted to upgrade these components to address the potential impact of the issues. Nessus Agent 10.4.3 updates OpenSSL to version 3.0.12 and zlib fixes have been applied to address the identified vulnerabilities.

Additionally, one other vulnerability was discovered, reported and fixed:

  • Under certain conditions, a low privileged attacker could load a specially crafted file during installation or upgrade to escalate privileges on Windows and Linux hosts. - CVE-2023-5847

Solution

Tenable has released Nessus Agent 10.4.3 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-2023-38
Risk Factor: High
Credit:
Xavier Danest (CVE-2023-5847)
CVSSv3 Base / Temporal Score:
5.3 / 4.6 (CVE-2023-3446)
5.3 / 4.6 (CVE-2023-3817)
4.8 / 4.2 (CVE-2023-4807)
6.7 / 5.8 (CVE-2023-5847)
8.8 / 7.7 (CVE-2023-45853)
CVSSv3 Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C (CVE-2023-3446)
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C (CVE-2023-3817)
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C (CVE-2023-4807)
AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C (CVE-2023-5847)
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C (CVE-2023-45853)

Affected Products

Nessus Agent 10.4.2

Disclosure Timeline

2023-10-06 - Report received by Tenable
2023-10-13 - Report confirmed as valid
2023-10-30 - CVE ID requested / CVSS v3 scoring calculated
2023-10-31 - Nessus Agent 10.4.3 released
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