CVE-2022-36436
CRITICALOSU Open Source Lab VNCAuthProxy <1.1.1 - Auth Bypass
Title source: llmDescription
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.
References (4)
Core 4
Core References
Release Notes x_refsource_misc
https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1
Product x_refsource_misc
https://pypi.org/project/VNCAuthProxy/
Patch x_refsource_misc
https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b
Exploit, Patch x_refsource_misc
https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/
Scores
CVSS v3
9.8
EPSS
0.0164
EPSS Percentile
73.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-287
Status
published
Products (2)
osuosl/twisted_vnc_authentication_proxy
< 1.2.0
pypi/vncauthproxy
0 - 1.2.0PyPI
Published
Sep 14, 2022
Tracked Since
Feb 18, 2026