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[R1] Nessus Agent 8.2.3 Fixes Multiple Vulnerabilities

Medium
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Synopsis

Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance. This could allow a privileged attacker to obtain the token.

Additionally, one third-party component (OpenSSL) was found to contain vulnerabilities, and updated versions have been made available by the provider. Nessus Agent version 8.2.3 will update OpenSSL to 1.1.1j.

Solution

Tenable has released Nessus Agent 8.2.3 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://docs.tenable.com/releasenotes/Content/nessusagent/agent823.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

Tenable Advisory ID: TNS-2021-04
Risk Factor: Medium
CVSSv2 Base / Temporal Score
5.0 / 3.9 (CVE-2021-23840)
5.0 / 3.9 (CVE-2021-23841)
1.7 / 1.4 (CVE-2021-20077)
CVSSv2 Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:P)(CVE-2021-23840)
(AV:N/AC:L/Au:N/C:N/I:N/A:P)(CVE-2021-23841)
(AV:L/AC:L/Au:S/C:P/I:N/A:N/E:F/RL:OF/RC:C)(CVE-2021-20077)

Affected Products

Nessus Agent 7.2.0 through 8.2.2

Advisory Timeline

2021-03-18 - [R1] Initial Release
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