Check Point Advisories

UltraVNC VNC Server Heap-based Buffer Overflow (CVE-2019-8274)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-1742
Date Published:	1 Mar 2020
Severity:	High
Last Updated:	Thursday 26 October, 2023
Source:
Industry Reference:	CVE-2019-8274
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	UltraVNC prior to revision 1212 UltraVNC 1.2.2.3 and earlier
Vulnerability Description	A buffer overflow vulnerability exists in UltraVNC VNC Server. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the UltraVNC VNC Server Heap-based Buffer Overflow (CVE-2019-8274) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: UltraVNC VNC Server Heap-based Buffer Overflow (CVE-2019-8274)