CVE-2022-36436
VNCAuthProxy VNC Server Authentication Bypass 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.
INFO
Published Date :
Sept. 14, 2022, 11:15 a.m.
Last Modified :
Nov. 21, 2024, 7:13 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2022-36436 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-36436.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Fetches security vulnerabilities and creates pip-constraints based on them.
python security dependencies pip supply-chain-security
Python Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-36436 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-36436 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/ Added Reference https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b Added Reference https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1 Added Reference https://pypi.org/project/VNCAuthProxy/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 01, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-287 Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Feb. 13, 2024
Action Type Old Value New Value Changed Reference Type https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/ Exploit, Patch, Third Party Advisory https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/ Exploit, Patch Changed Reference Type https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b Patch, Third Party Advisory https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b Patch Changed Reference Type https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1 Release Notes, Third Party Advisory https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1 Release Notes Changed Reference Type https://pypi.org/project/VNCAuthProxy/ Product, Third Party Advisory https://pypi.org/project/VNCAuthProxy/ Product Removed CWE NIST NVD-CWE-Other Added CWE NIST CWE-287 -
Initial Analysis by [email protected]
Sep. 16, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/ No Types Assigned https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/ Exploit, Patch, Third Party Advisory Changed Reference Type https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b No Types Assigned https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b Patch, Third Party Advisory Changed Reference Type https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1 No Types Assigned https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1 Release Notes, Third Party Advisory Changed Reference Type https://pypi.org/project/VNCAuthProxy/ No Types Assigned https://pypi.org/project/VNCAuthProxy/ Product, Third Party Advisory Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:a:osuosl:twisted_vnc_authentication_proxy:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-36436 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-36436
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} -0.02%
score
0.33809
percentile