CVE-2022-31793

high-risk
Published 2022-08-04

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.

Do I need to act?

!
93.8% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (7)

Affected Vendors

Arris Inglorion

References (9)

Third Party Advisory http://inglorion.net/software/muhttpd/
Third Party Advisory https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-a...
Exploit https://derekabdine.com/blog/2022-arris-advisory
Third Party Advisory https://kb.cert.org/vuls/id/495801
Third Party Advisory http://inglorion.net/software/muhttpd/
Third Party Advisory https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-a...
Exploit https://derekabdine.com/blog/2022-arris-advisory
Third Party Advisory https://kb.cert.org/vuls/id/495801
https://www.kb.cert.org/vuls/id/495801
60
/ 100
high-risk
Severity 26/34 · High
Exploitability 20/34 · Moderate
Exposure 14/34 · Moderate