Arbitrary file upload in Beijing Star-Net Ruijie Network Technology Co., Ltd. Nbr Series Routers
CVE-2023-7330
Ruijie NBR series routers contain an unauthenticated arbitrary file upload vulnerability via /ddi/server/fileupload.php. The endpoint accepts attacker-supplied values in the name and uploadDir parameters and saves the provided multipart file content without adequate validation or sanitization of file type, path, or extension. A remote attacker can upload a crafted PHP file and then access it from the web root, resulting in arbitrary code execution in the context of the web service. Exploitation evidence was observed by the Shadowserver Foundation on 2025-01-14 UTC.
Vulnerability class: Unrestricted File Upload
Published · last modified .
EPSS exploit prediction
EPSS: 0.006 (47.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/rui… (exploit)
- cn-sec.com/archives/1995366.html (exploit)
- www.cnblogs.com/Domren/articles/19093295 (exploit)
- rfk0z.github.io/posts/Ruijie-NBR-router-fileupload-php-arbitrary-file-upload-vu… (exploit)
- www.vulncheck.com/advisories/ruijie-networks-nbr-routers-unauthenticated-arbitr… (third-party-advisory)