CVE Vulnerability

CVE-2022-36436

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.

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/osuosl/twisted_vncauthproxy/commit/edc149af29242178091b2d6fcd42c3ef0851644b Patch Third Party Advisory
https://github.com/osuosl/twisted_vncauthproxy/tree/release/1.1.1 Release Notes Third Party Advisory
https://pypi.org/project/VNCAuthProxy/ Product Third Party Advisory
https://cert.grnet.gr/en/blog/cve-2022-36436-twisted-vnc-authentication-proxy-authentication-bypass/ Exploit Patch
Configurations

Configuration 1

cpe:2.3:a:osuosl:twisted_vnc_authentication_proxy:*:*:*:*:*:*:*:*
Information

Published : 2022-09-14 11:15

Updated : 2022-09-16 03:00

NVD link : CVE-2022-36436

Mitre link : CVE-2022-36436

Products Affected
No products.
CWE
CWE-287