CVE-2021-33045 : What You Need to Know
Learn about CVE-2021-33045, an identity authentication bypass vulnerability in certain Dahua IP Camera, Video Intercom, NVR, and XVR devices. Find out the impact, affected systems, and mitigation steps.
A vulnerability has been discovered in some Dahua products that allows attackers to bypass device identity authentication by manipulating data packets during the login process.
Understanding CVE-2021-33045
This CVE involves an identity authentication bypass vulnerability in certain Dahua IP Camera, Video Intercom, NVR, and XVR devices.
What is CVE-2021-33045?
The vulnerability in some Dahua products allows malicious actors to circumvent device identity authentication during the login process.
The Impact of CVE-2021-33045
Attackers can exploit this flaw to gain unauthorized access to vulnerable Dahua devices, potentially compromising security and privacy.
Technical Details of CVE-2021-33045
This section details the specifics of the vulnerability.
Vulnerability Description
The vulnerability enables threat actors to bypass device identity authentication in affected Dahua products by crafting and sending malicious data packets.
Affected Systems and Versions
The vulnerability affects Dahua IP Camera devices including IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX built before May 2020, Video Intercom devices such as VTO75X95X, VTO65XXX, and VTH542XH, NVR devices NVR1XXX, NVR2XXX, NVR5XXX, NVR6XX, XVR devices XVR4xxx, XVR5xxx, and XVR7xxx built before December 2019.
Exploitation Mechanism
Attackers exploit this vulnerability by sending specially crafted data packets during the login process, allowing them to bypass identity authentication and gain unauthorized access.
Mitigation and Prevention
Protecting systems against CVE-2021-33045 involves taking immediate steps and implementing long-term security measures.
Immediate Steps to Take
To mitigate the risk associated with this vulnerability, users are advised to update the firmware of affected Dahua devices to secure versions.
Long-Term Security Practices
Implementing network segmentation, strong password policies, and regular security audits can help enhance the overall security posture of devices and networks.
Patching and Updates
Dahua has released security patches to address the vulnerability. It is crucial for users to promptly apply these patches to protect their devices from exploitation.