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[R1] Tenable Plugin Feed ID #202306261202 Fixes Privilege Escalation Vulnerability

Medium
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Synopsis

As a part of Tenable’s vulnerability disclosure program, a vulnerability in a Nessus plugin was identified and reported. This vulnerability could allow a malicious actor with sufficient permissions on a scan target to place a binary in a specific filesystem location, and abuse the impacted plugin in order to escalate privileges.

We have resolved the issue and made several defense-in-depth fixes alongside. While the probability of successful exploitation is low, Tenable is committed to securing our customers’ environments and our products. The updates have been distributed via the Tenable plugin feed.

Solution

Tenable has released updates to plugins to resolve the issue as well as the associated defense-in-depth fixes. The updates have been distributed via the Tenable plugin feed in feed serial numbers equal to or greater than #202306261202.

We would like to thank Patrick Romero from CrowdStrike for his work on this finding.

Additional References

https://www.tenable.com/plugins/nessus/release-notes
https://community.tenable.com/s/feed/0D53a00009F0L27CAF

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-2023-2005
Tenable Advisory ID: TNS-2023-21
Risk Factor: Medium
Credit:
Patrick Romero - CrowdStrike
CVSSv3 Base / Temporal Score:
6.3 / 6.2
CVSSv3 Vector:
AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Affected Products

Tenable.io
Tenable Security Center
Nessus

Disclosure Timeline

2023-04-02 - Report received by Tenable
2023-04-05 - Report confirmed as valid
2023-04-18 - CVE ID requested
2023-06-26 - All fixes across multiple products deployed

Advisory Timeline

2023-06-26 - [R1] Initial Release
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