NUUO NVRmini2 Devices Missing Authentication Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-12-18
• EPSS: 48% chance of exploitation in the next 30 days (higher than 99% of CVEs)
• Critical severity: CVSS 9.8

[ Description ]Official 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.

CISA: NUUO NVRmini2 devices contain a missing authentication vulnerability that allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 8 Jan 2025): The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/pedrib/PoC/blob/master/advisories/NUUO/nuuo_nvrmini_round2.mkdExploitThird Party Advisory
• github.com/rapid7/metasploit-framework/pull/16044ExploitIssue TrackingThird Party Advisory
• news.ycombinator.com/itemThird Party Advisory
• portswigger.net/daily-swig/researcher-discloses-alleged-zero-day-vulnerabilities-in-nuu…ExploitThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource