Vulnerability identifier: #VU7890

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-11506

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Tenable Nessus
Client/Desktop applications / Software for system administration

Vendor: Tenable Network Security

Description
The vulnerability allows a remote attacker to perform man-in-the-middle attack.

The weakness exists due to insufficient verification of the manager's TLS certificate when making the initial outgoing connection. A remote attacker can conduct a man-in-the-middle attack to access and modify data communicated between the scanner/agent and the manager.

Mitigation
Update to version 6.11.

Vulnerable software versions

Tenable Nessus: 6.0.0 - 6.9.3

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External links
http://www.tenable.com/security/tns-2017-11

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.