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             AUSCERT External Security Bulletin Redistribution

                Nessus Agent 8.3.0 Fixes One Vulnerability
                               30 June 2021


        AusCERT Security Bulletin Summary

Product:           Nessus Agent
Publisher:         Tenable
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Administrator Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-20106  

Original Bulletin: 

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[R1] Nessus Agent 8.3.0 Fixes One Vulnerability



Nessus Agent versions 8.2.5 and earlier were found to contain a privilege
escalation vulnerability which could allow a Nessus administrator user to
upload a specially crafted file that could lead to gaining administrator
privileges on the Nessus host.


Tenable has released Nessus Agent 8.3.0 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  

Risk Information

CVE ID: CVE-2021-20106
Tenable Advisory ID:
Risk Factor:
CVSSv2 Base / Temporal Score:
6.8 / 5.3
CVSSv2 Vector:
CVSSv3 Base / Temporal Score:
7.7 / 6.9
CVSSv3 Vector:

Affected Products

Nessus Agent 8.2.5 and earlier

Advisory Timeline

2021-06-28 - [R1] Initial Release

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