Description Preview
A critical authentication bypass vulnerability (CVE-2021-33045) affects various Dahua products. This vulnerability allows attackers to bypass device identity authentication during the login process by crafting malicious data packets. The issue is classified as CWE-287 (Improper Authentication) and could potentially grant unauthorized access to affected systems.
Overview
This vulnerability exists in the authentication mechanism of certain Dahua products. Attackers can exploit this flaw by sending specially crafted data packets during the login process, allowing them to bypass the normal authentication requirements. Once authentication is bypassed, an attacker could gain unauthorized access to the device with potentially elevated privileges. This vulnerability represents a serious security risk as it compromises the fundamental authentication controls protecting these devices.
Remediation
Users of affected Dahua products should:
- Update to the latest firmware version as provided by Dahua Technology.
- Visit the Dahua Security website (https://www.dahuasecurity.com/support/cybersecurity/details/957) for specific patch information and affected product details.
- Implement network segmentation to isolate vulnerable devices until patching is possible.
- Monitor system logs for any suspicious login attempts or unusual activities.
- Change all device credentials after applying security updates.
- Consider implementing additional authentication layers such as VPN access for remote management.
References
- Dahua Security Advisory: https://www.dahuasecurity.com/support/cybersecurity/details/957
- Packet Storm Security - Dahua Authentication Bypass: http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html
- Full Disclosure Mailing List: http://seclists.org/fulldisclosure/2021/Oct/13 - "[Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045)"
- CWE-287: Improper Authentication - https://cwe.mitre.org/data/definitions/287.html
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- Health Care & Social AssistanceHealth Care & Social Assistance
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- ManufacturingManufacturing
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Accommodation & Food ServicesAccommodation & Food Services
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- ConstructionConstruction
- Educational ServicesEducational Services
- Finance and InsuranceFinance and Insurance
- InformationInformation
- MiningMining
- Other Services (except Public Administration)Other Services (except Public Administration)
- Public AdministrationPublic Administration
- Real Estate Rental & LeasingReal Estate Rental & Leasing
- Retail TradeRetail Trade
- Transportation & WarehousingTransportation & Warehousing
- UtilitiesUtilities
- Wholesale TradeWholesale Trade
