Vulnerability CVE-2022-31793
Published: 2022-08-04   Modified: 2022-08-05

Description:
do_request in request.c in muhttpd before 1.1.7 allows remote attackers to read arbitrary files by constructing a URL with a single character before a desired path on the filesystem. This occurs because the code skips over the first character when serving files. Arris NVG443, NVG599, NVG589, and NVG510 devices and Arris-derived BGW210 and BGW320 devices are affected.

 References:
https://derekabdine.com/blog/2022-arris-advisory
https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-traversal-attacks/
https://kb.cert.org/vuls/id/495801
http://inglorion.net/software/muhttpd/
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