CVE-2022-31793

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.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 99%
VendorProductVersion
inglorionmuhttpd
𝑥
< 1.1.7
arrisnvg443_firmware
-
arrisnvg599_firmware
-
arrisnvg589_firmware
-
arrisnvg510_firmware
-
arrisbgw210_firmware
-
arrisbgw320_firmware
-
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
http://inglorion.net/software/muhttpd/
https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-traversal-attacks/
https://derekabdine.com/blog/2022-arris-advisory
https://kb.cert.org/vuls/id/495801
http://inglorion.net/software/muhttpd/
https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-traversal-attacks/
https://derekabdine.com/blog/2022-arris-advisory
https://kb.cert.org/vuls/id/495801
https://www.kb.cert.org/vuls/id/495801