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[R3] SecurityCenter 5.4 Fixes Multiple Third-party Library Vulnerabilities

High
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Synopsis

SecurityCenter uses third-party libraries to provide certain standardized functionality. Two of these libraries were found to contain vulnerabilities and were fixed upstream. Those fixes have been integrated despite there being no known exploitation scenarios related to SecurityCenter.

  1. cURL / libcurl DLL Hijacking Arbitrary Code Execution
  2. cURL / libcurl lib/timeval.c curlx_tvdiff() Function timeval Handling Integer Overflow Unspecified Issue
  3. libssh / libssh2 Insecure Diffie-Hellman Secret Key Generation MitM Spoofing

Note that the CVSSv2 score associated with this advisory is specific to libcurl's integration in SecurityCenter and assumes a worst-case scenario despite the integer overflow not being proven to result in code execution. Further, Tenable strongly recommends that SecurityCenter be installed on a subnet that is not Internet addressable.

Solution

Tenable has released version 5.4 of SecurityCenter that addresses these issues. Upgrade information and a download can be obtained from:

http://static.tenable.com/prod_docs/upgrade_security_center.html

Additional References

https://curl.haxx.se/docs/adv_20160530.html
https://curl.haxx.se/changes.html#7_48_0
https://www.libssh2.org/adv_20160223.html

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-2016-12
Risk Factor: High
CVSSv2 Base / Temporal Score
7.1 / 5.3
CVSSv2 Vector:
(AV:N/AC:H/Au:S/C:C/I:C/A:C/E:U/RL:OF/RC:C)

Affected Products

SecurityCenter: 5.3.1, 5.3.2

Advisory Timeline

2016-07-21 - [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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