CVE-2021-33045 Dahua IP Camera Firmware: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Sep 11, 2024
What to do
- Install Dahua's security update for IP Camera Firmware. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- Dahua IP Camera Authentication Bypass Vulnerability
- Product
- Dahua IP Camera Firmware
- CISA description
- Dahua IP cameras and related products contain an authentication bypass vulnerability when the loopback device is specified by the client during authentication.
- Type of flaw
- Login or permission bypass (CWE-287)
- Confirmed exploited
- Aug 21, 2024
- US federal patch deadline
- Sep 11, 2024
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Answering about CVE-2021-33045 ·
Questions about CVE-2021-33045
Is CVE-2021-33045 being exploited?
Yes. CISA added CVE-2021-33045 to its Known Exploited Vulnerabilities catalog on Aug 21, 2024, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2021-33045?
Install Dahua's security update for IP Camera Firmware. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2021-33045?
Only if you use Dahua IP Camera Firmware. This one is aimed at devices or apps of the kind people own.