CVE-2021-32970 Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation
A remote attacker can cause denial-of-service conditions in Moxa NPort IAW5000A-I/O devices due to improper input validation in the web 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-2021-32970?
CVE-2021-32970 is a high-severity denial of service vulnerability in Moxa NPort IAW5000A-I/O series firmware, published on 1 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Data can be copied without validation in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier, which may allow a remote attacker to cause denial-of-service conditions.
Weakness: CWE-20
Which versions are affected by CVE-2021-32970?
It affects 4 products.
Products include Moxa Nport Iaw5150a-12i\/O Firmware, Moxa Nport Iaw5150a-6i\/O Firmware, Moxa Nport Iaw5250a-12i\/O Firmware, Moxa Nport Iaw5250a-6i\/O Firmware.
How do I fix CVE-2021-32970?
No fix has been published for CVE-2021-32970 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-32970 being exploited?
There is no known exploitation of CVE-2021-32970 in the wild and no public exploit code.
Other vulnerabilities in Moxa NPort IAW5000A-I/O series firmware
Sources
Also known as GHSA-6f6v-pfrh-9h98.