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[R1] Nessus 6.11 Fixes One Vulnerability

Medium
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Synopsis

When linking a Nessus scanner or agent to Tenable.io or other manager, Nessus did not verify the manager's TLS certificate when making the initial outgoing connection. This could allow man-in-the-middle attacks. Please note that Tenable strongly recommends that Nessus be installed on a subnet that is not Internet addressable.

Solution

Tenable has released Nessus version 6.11 that corresponds to the supported operating systems and architectures. This version updates the link command, so Nessus verifies the certificate for *.tenable.com when linking a scanner or agent to Tenable.io. To update your Nessus installation, follow these steps: Download the appropriate installation file to the system hosting Nessus Professional or Nessus Manager, available at the Tenable Support Portal (https://support.tenable.com/support-center/index.php?x=&mod_id=200) - Stop the Nessus service - Install according to your operating system procedures - Restart the Nessus service

Additional References

http://static.tenable.com/prod_docs/upgrade_nessus.html#6110

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-2017-11506
Tenable Advisory ID: TNS-2017-11
Risk Factor: Medium
Credit:
Fastly
CVSSv2 Base / Temporal Score
5.8/4.3
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:N/E:U/RL:OF/RC:C/CDP:N/TD:L/CR:L/IR:L/AR:ND

Affected Products

Nessus 6.x to 6.10

Disclosure Timeline

2017-06-16 - Issue reported to Tenable by Fastly
2017-06-19 - Tenable confirms receipt and verifies issues
2017-08-04 - Requested CVE ID
2017-08-07 - Nessus 6.11 released
2017-08-08 - CVE ID assigned and advisory published

Advisory Timeline

2017-08-07 - [R1] Initial Release
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