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[R3] Tenable Appliance 4.3.1 Fixes One Vulnerability

Medium
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Synopsis

Tenable Appliance has been found to contain a vulnerability in the web interface. With a crafted request using a traversal sequence, an authenticated attacker can abuse a resource to enumerate or delete arbitrary files on the underlying operating system.

Please note that Tenable strongly recommends that the Tenable Appliance be installed on a subnet that is not Internet addressable.

Solution

Tenable has released version 4.3.1 of the Appliance that resolves this issue. Users are strongly encouraged to update.

Note: Tenable Appliance 4.2.0, released on June 30, 2016, fixed a remote DoS condition in the integrated lighttpd server (no CVE).

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-2016-15
Risk Factor: Medium
Credit:
Vincent Hutsebaut and Christophe Schleypen, <a href="https://www.ncia.nato.int/Pages/homepage.aspx" target="_blank">NATO Communications and Information Agency</a>
CVSSv2 Base / Temporal Score
5.5 / 4.3
CVSSv2 Vector:
(AV:N/AC:L/Au:S/C:P/I:P/A:N/E:POC/RL:OF/RC:C)

Affected Products

Tenable Appliance 4.3.0

Disclosure Timeline

2016-09-13 - Issue disclosed to Tenable
2016-09-13 - Tenable confirms receipt
2016-10-05 - Appliance 4.3.1 released

Advisory Timeline

2016-10-05 - [R1] Initial Release
2016-11-12 - [R2] Adjust CVSSv2 score
2017-02-28 - [R3] Adjust CVSS for worst-case scenario (AV:A -> AV:N)
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