Detections
Analytics

SCA: security update for vncauthproxy (GHSA-237r-mx84-7x8c)

critical Tenable Cloud Security Plugin ID 408622

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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.
 (CVE-2022-36436)

See Also

https://github.com/advisories/GHSA-237r-mx84-7x8c

Plugin Details

Severity: Critical

ID: 408622

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-36436

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/16/2022

Vulnerability Publication Date: 9/14/2022

Reference Information

CVE: CVE-2022-36436

cwe: CWE-287