Check Point Advisories

Dahua Security Multiple Products Authentication Bypass (CVE-2021-33045)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-2207
Date Published:	29 Aug 2024
Severity:	Critical
Last Updated:	Sunday 13 October, 2024
Source:
Industry Reference:	CVE-2021-33045
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Dahua Security ipc-hum7xxx prior to 2.820.0000000.5.r.210705 Dahua Security ipc-hx3xxx prior to 2.800.0000000.29.r.210630 Dahua Security nvr-1xxx firmware prior to 4.001.0000005.1.r.210709 Dahua Security nvr-2xxx firmware prior to 4.001.0000000.1.r.210710 Dahua Security nvr-4xxx firmware prior to 4.001.0000005.1.r.210713 Dahua Security nvr-5xxx firmware prior to 4.001.0000000.0.r.210710 Dahua Security nvr-6xx firmware prior to 4.001.0000001.1.r.210716 Dahua Security vth-542xh firmware prior to 4.500.0000002.0.r.210715 Dahua Security vto-65xxx firmware prior to 4.300.0000004.0.r.210715 Dahua Security vto-75x95x firmware prior to 4.300.0000003.0.r.210714 Dahua Security xvr-4x08 firmware prior to 4.001.0000001.1.r.210709 Dahua Security xvr-4x04 firmware prior to 4.001.0000001.1.r.210709 Dahua Security xvr-5x04 firmware prior to 4.001.0000003.1.r.210710 Dahua Security xvr-5x08 firmware prior to 4.001.0000003.1.r.210710 Dahua Security xvr-5x16 firmware prior to 4.001.0000003.1.r.210710 Dahua Security xvr-7x16 firmware prior to 4.001.0000003.1.r.210710 Dahua Security xvr-7x32 firmware prior to 4.001.0000003.1.r.210710
Vulnerability Description	An authentication bypass vulnerability exists in multiple Dahua Security products. Successful exploitation of this vulnerability would allow remote attackers to gain unauthorized access into the affected system.

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 Dahua Security Multiple Products Authentication Bypass (CVE-2021-33045) 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: Dahua Security Multiple Products Authentication Bypass (CVE-2021-33045)