CVE-2021-32976: Moxa NPort IAW5000A-I/O Series Serial Device Server Stack-based Buffer Overflow
First published: Fri Apr 01 2022(Updated: )
Five buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier may allow a remote attacker to initiate a denial-of-service attack and execute arbitrary code.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Moxa Nport Iaw5150a-6i\/o Firmware | <=2.2 | |
| Moxa Nport Iaw5150a-6i\/o | ||
| Moxa Nport Iaw5150a-12i\/o Firmware | <=2.2 | |
| Moxa Nport Iaw5150a-12i\/o | ||
| Moxa Nport Iaw5250a-6i\/o Firmware | <=2.2 | |
| Moxa Nport Iaw5250a-6i\/o | ||
| Moxa Nport Iaw5250a-12i\/o Firmware | <=2.2 | |
| Moxa Nport Iaw5250a-12i\/o | ||
| Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier |
Remedy
Moxa has developed solutions to address these vulnerabilities. Please contact Moxa Technical Support for a security patch. Moxa has also published a security advisory to provide more information.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-32976?
The severity of CVE-2021-32976 is critical with a CVSS score of 9.8.
How can a remote attacker exploit CVE-2021-32976?
A remote attacker can exploit CVE-2021-32976 by sending specially crafted requests to the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier.
What are the potential impacts of CVE-2021-32976?
CVE-2021-32976 may allow a remote attacker to initiate a denial-of-service attack and execute arbitrary code.
Which versions of Moxa NPort IAW5000A-I/O firmware are affected by CVE-2021-32976?
Moxa NPort IAW5000A-I/O firmware version 2.2 or earlier is affected by CVE-2021-32976.
How can I mitigate the vulnerability in Moxa NPort IAW5000A-I/O firmware?
To mitigate the vulnerability in Moxa NPort IAW5000A-I/O firmware, users should update to a version later than 2.2.
- collector/nvd-index
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/last-modified-date
- agent/author
- agent/title
- agent/weakness
- agent/first-publish-date
- agent/description
- agent/references
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/event
- collector/ics-cert-advisory
- source/ICS
- agent/software-canonical-lookup
- vendor/moxa
- canonical/moxa nport iaw5150a-6i\/o firmware
- version/moxa nport iaw5150a-6i\/o firmware/2.2
- canonical/moxa nport iaw5150a-6i\/o
- canonical/moxa nport iaw5150a-12i\/o firmware
- version/moxa nport iaw5150a-12i\/o firmware/2.2
- canonical/moxa nport iaw5150a-12i\/o
- canonical/moxa nport iaw5250a-6i\/o firmware
- version/moxa nport iaw5250a-6i\/o firmware/2.2
- canonical/moxa nport iaw5250a-6i\/o
- canonical/moxa nport iaw5250a-12i\/o firmware
- version/moxa nport iaw5250a-12i\/o firmware/2.2
- canonical/moxa nport iaw5250a-12i\/o
- canonical/moxa nport iaw5000a-i/o series firmware version 2.2 or earlier