CVE-2022-24750
UltraVNC DSM Plugin Local Privilege Escalation
Description
UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.1. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if winvnc needs to be started as a service.
INFO
Published Date :
March 10, 2022, 9:15 p.m.
Last Modified :
March 1, 2023, 4:21 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
6.0
Exploitability Score :
2.0
Public PoC/Exploit Available at Github
CVE-2022-24750 has a 6 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-2022-24750.
| URL | Resource |
|---|---|
| https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE | Patch Third Party Advisory |
| https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352 | Patch Third Party Advisory |
| https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g | Third Party Advisory |
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).
None
None
None
None
None
Israel Barnabas' report
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-24750 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-24750 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 01, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.8.0 OR *cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.8.1 -
CVE Modified by [email protected]
Jan. 11, 2023
Action Type Old Value New Value Changed Description UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.0. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if wincnc needs to be started as a service. UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.1. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if winvnc needs to be started as a service. -
Initial Analysis by [email protected]
Mar. 18, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE No Types Assigned https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE Patch, Third Party Advisory Changed Reference Type https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352 No Types Assigned https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352 Patch, Third Party Advisory Changed Reference Type https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g No Types Assigned https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.8.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-24750 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-2022-24750
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile