CVE-2022-36436
9.8 · CRITICALOverview
CVE-2022-36436 is a critical-severity vulnerability affecting osuosl twisted_vnc_authentication_proxy. It was published on September 14, 2022 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
OSU Open Source Lab VNCAuthProxy through 1.1.1 is affected by an vncap/vnc/protocol.py VNCServerAuthenticator authentication-bypass vulnerability that could allow a malicious actor to gain unauthorized access to a VNC session or to disconnect a legitimate user from a VNC session. A remote attacker with network access to the proxy server could leverage this vulnerability to connect to VNC servers protected by the proxy server without providing any authentication credentials. Exploitation of this issue requires that the proxy server is currently accepting connections for the target VNC server.
Remediation
Check the references section for vendor advisories and patches from osuosl. Update twisted_vnc_authentication_proxy to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| osuosl | twisted_vnc_authentication_proxy | >= 0, < 1.2.0 | Affected |
References
Frequently Asked Questions
What is CVE-2022-36436?
CVE-2022-36436 is a critical-severity vulnerability affecting osuosl twisted_vnc_authentication_proxy. It was published on September 14, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2022-36436?
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-2022-36436?
Check the references section for vendor advisories and patches from osuosl. Update twisted_vnc_authentication_proxy to the latest patched version. 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-2022-36436?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-36436 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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