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CVE-2019-17662

9.8 · CRITICAL

ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server.

Published Oct 16, 2019CWE-22EPSS 96.76%

Overview

CVE-2019-17662 is a critical-severity vulnerability. It was published on October 16, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server. The vulnerability exists even when authentication is turned on during the deployment of the VNC server. The password for authentication is stored in cleartext in a file that can be read via a ../../ThinVnc.ini directory traversal attack vector.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/154896/ThinVNC-1.0b1-Authentication-Bypass.htmlGitHubgithub.com/bewest/thinvnc/issues/5GitHubgithub.com/shashankmangal2/Exploits/blob/master/ThinVNC-RemoteAccess/POC.pyRefredteamzone.com/ThinVNC/Refpacketstormsecurity.com/files/154896/ThinVNC-1.0b1-Authentication-Bypass.htmlGitHubgithub.com/bewest/thinvnc/issues/5GitHubgithub.com/shashankmangal2/Exploits/blob/master/ThinVNC-RemoteAccess/POC.pyRefredteamzone.com/ThinVNC/

How CyberStrike helps

Frequently asked questions

What is CVE-2019-17662?

CVE-2019-17662 is a critical-severity vulnerability. It was published on October 16, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2019-17662?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-17662?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-17662?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-17662 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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