Vulnerability Details : CVE-2022-31793
Potential exploit
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.
Vulnerability category: Directory traversal
Products affected by CVE-2022-31793
- cpe:2.3:o:arris:nvg443_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg599_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg589_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg510_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:bgw210_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:bgw320_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:a:inglorion:muhttpd:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-31793
11.54%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-31793
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2022-31793
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-31793
-
http://inglorion.net/software/muhttpd/
Third Party Advisory
-
https://kb.cert.org/vuls/id/495801
Third Party Advisory;US Government Resource
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https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-traversal-attacks/
Third Party Advisory
-
https://derekabdine.com/blog/2022-arris-advisory
Exploit;Third Party Advisory
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