CVE-2021-33824

An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.

CVSS v3.1 NVD

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

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

1.93% chance of exploitation in the next 30 days, 80th percentile

Published

2021-06-18

Updated

2024-08-03

Proof-of-concept exploits (1)

• Jian-Xian/CVE-POC/blob/master/CVE-2021-33824.md10★ · 2021-09-24

Security advisories

• https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tc…
• shekyan/slowhttptest

References

• CVE Record
• NVD entry

Related

• CVE-2020-10262
• CVE-2020-10263
• CVE-2020-8994
• CVE-2021-33818
• CVE-2021-33820
• CVE-2021-33822