CVE-2021-33824

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-33824
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-06-18T20:15:07
  • Last Modified Date
  • 2021-06-24T19:01:33
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:moxa:mgate_mb3180_firmware:2.1:build_18113012:*:*:*:*:*:* 1 OR
cpe:2.3:h:moxa:mgate_mb3180:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33824.md Exploit Third Party Advisory
https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tcp-gateways/mgate-mb3180-mb3280-mb3480-series Product Vendor Advisory
https://github.com/shekyan/slowhttptest Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-33824
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33824
History
Created Old Value New Value Data Type Notes
2022-05-10 07:09:56 Added to TrackCVE
2022-12-05 04:38:42 2021-06-18T20:15Z 2021-06-18T20:15:07 CVE Published Date updated
2022-12-05 04:38:42 2021-06-24T19:01:33 CVE Modified Date updated
2022-12-05 04:38:42 Analyzed Vulnerability Status updated