Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Osuosl | Twisted Vnc Authentication Proxy | < 1.2.0 |
Related Weaknesses (CWE)
References
- https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-auExploitPatch
- https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcdPatch
- https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1Release Notes
- https://pypi.org/project/VNCAuthProxy/Product
- https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-auExploitPatch
- https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcdPatch
- https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1Release Notes
- https://pypi.org/project/VNCAuthProxy/Product
FAQ
What is CVE-2022-36436?
CVE-2022-36436 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 unauthorize...
How severe is CVE-2022-36436?
CVE-2022-36436 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2022-36436?
Check the references section above for vendor advisories and patch information. Affected products include: Osuosl Twisted Vnc Authentication Proxy.