NUUO NVRmini2 through 3.11 allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users
Affects NUUO NVRmini2 firmware up to and including 03.11.0000.0016. The checked facts list no fixed version and no vendor severity rating.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
NUUO NVRmini2 network video recorder software (versions up to 3.11) can be attacked without logging in, allowing an attacker to add unauthorized user accounts. When chained with a second flaw, an attacker could overwrite web files and run code with root privileges.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
NUUO NVRmini2 through 3.11 allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users because of the lack of handle_import_user.php authentication. When combined with another flaw (CVE-2011-5325), it is possible to overwrite arbitrary files under the web root and achieve code execution as root.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a n/a
Version range not reported
References 4
GitHub · pedrib/PoC
GitHub · rapid7/metasploit-framework
portswigger.net
news.ycombinator.com
Questions about CVE-2022-23227
What does this mean?
An unauthenticated attacker can upload an encrypted TAR archive to the device, and that archive can be abused to add arbitrary users. Chained with the BusyBox tar directory traversal (CVE-2011-5325), the facts describe unauthenticated remote code execution as root.Source: github.com
Am I affected, and how do I check?
Every publicly released NUUO NVRmini2 firmware up to and including 03.11.0000.0016 is listed as affected. To check a device, compare its installed firmware version against 03.11.0000.0016.Source: github.com
What should I do about it?
The checked facts do not name a fixed firmware version or an upgrade target. Check the vendor's channels for an updated firmware release for the NVRmini2.Source: github.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2024-12-18, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
The checked facts do not list a workaround or mitigation. Until a fix is confirmed, limit access to the device's network interface, since the flaw is reachable without authentication.Source: github.com