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UltraVNC < 1.3.8.1 Privilege Escalation

high Nessus Plugin ID 189187

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Synopsis

A remote desktop application installed on the remote Windows host is affected by a privilege escalation vulnerability.

Description

The version of UltraVNC Service installed on the remote Windows host is prior to 1.3.8.1. It is, therefore, affected by an escalation of privilege vulnerability in DSM plugin module. When running as a service, a local, authenticated, attacker can run arbitrary code in the context of the VNC server process.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to UltraVNC version 1.3.8.1 or later.

See Also

http://www.nessus.org/u?88dc8569

Plugin Details

Severity: High

ID: 189187

File Name: ultravnc_1_3_8_1.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows

Published: 1/18/2024

Updated: 1/19/2024

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2022-24750

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/a:ultravnc:ultravnc

Required KB Items: SMB/Registry/Enumerated, installed_sw/UltraVNC

Exploit Ease: No known exploits are available

Patch Publication Date: 3/3/2022

Vulnerability Publication Date: 3/10/2022

Reference Information

CVE: CVE-2022-24750

IAVB: 2024-B-0006