CVE-2021-33823 — HIGH (7.5)

Vulnerability Description

An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Moxa	Mgate Mb3180 Firmware	2.1
Moxa	Mgate Mb3180	-

References

https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33823.mdExploitThird Party Advisory
https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/ProductVendor Advisory
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33823.mdExploitThird Party Advisory
https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/ProductVendor Advisory

FAQ

What is CVE-2021-33823?

CVE-2021-33823 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-...

How severe is CVE-2021-33823?

CVE-2021-33823 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33823?

Check the references section above for vendor advisories and patch information. Affected products include: Moxa Mgate Mb3180 Firmware, Moxa Mgate Mb3180.