CVE-2022-31793 Path traversal in n/a
Remote attackers can read arbitrary files on Arris gateways due to a path traversal flaw in the muhttpd server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-31793?
CVE-2022-31793 is a high-severity path traversal vulnerability in n/a, published on 4 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2022-31793?
It affects 7 products.
Products include Arris Bgw210 Firmware, Arris Bgw320 Firmware, Arris Nvg443 Firmware, Arris Nvg510 Firmware, Arris Nvg589 Firmware, Arris Nvg599 Firmware and 1 more.
How do I fix CVE-2022-31793?
No fix has been published for CVE-2022-31793 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2022-31793 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31793 exists.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Sources
Also known as GHSA-c4c9-87fm-m8qc.