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[R5] Nessus 6.6 Fixes Two Vulnerabilities

Medium
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Synopsis

Tenable recently worked with Synacktiv to perform security testing for Nessus, as part of an ongoing initiative to proactively address security issues. During the test, their team found two issues that may impact a Nessus vulnerability scanner. Both issues require user authentication to exploit:

  • CVE-2016-82012 - Stored XSS
  • CVE-2016-82013 - XML External Entity (XXE) Expansion DoS

Note that the CVSS score reflects the higher of the two issues (XXE). Further, Tenable strongly recommends that these products be installed on a subnet that is not Internet addressable.

Solution

Tenable has released version 6.6 that corresponds to the supported operating systems and architectures. To update your Nessus installation, follow these steps:

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-2016-08
Risk Factor: Medium
Credit:
<a href="http://www.synacktiv.com/" target="_blank">Synacktiv</a>
CVSSv2 Base / Temporal Score
6.8 / 5.6
CVSSv2 Vector:
(AV:N/AC:L/Au:S/C:N/I:N/A:C/E:F/RL:OF/RC:C)

Affected Products

Nessus 6.0 - 6.5.6
Nessus Enterprise 6.0 - 6.5.6
Tenable Appliance 4.1.0

Advisory Timeline

2016-04-12 - [R1] Initial Release
2016-04-20 - [R2] Appliance added to affected products
2016-07-11 - [R3] Minor title tweak
2016-06-12 - [R4] Adjusted CVSSv2 score
2017-02-28 - [R5] Adjust CVSS for worst-case scenario (AV:A -> AV:N)
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