[Japanese]

JVNDB-2021-000075

WordPress Plugin "Quiz And Survey Master" vulnerable to cross-site scripting

Overview

WordPress Plugin "Quiz And Survey Master" provided by ExpressTech contains a cross-site scripting vulnerability (CWE-79) due to the flow in handling some URL query parameters.

Gen Sato of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to the developer and coordinated on his own.
After coordination was completed, this case was reported to JPCERT/CC, and JPCERT/CC coordinated with the developer for the publication.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.1 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products


ExpressTech
  • Quiz And Survey Master versions prior to 7.1.14

Impact

An arbitrary script may be executed on the user's web browser.
Solution

[Update the plugin]
Update the plugin according to the information provided by the developer.
Vendor Information

ExpressTech
CWE (What is CWE?)

  1. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2021-20792
References

  1. JVN : JVN#65388002
  2. National Vulnerability Database (NVD) : CVE-2021-20792
Revision History

  • [2021/08/10]
      Web page was published

Date Public2021/08/10
Date First Published2021/08/10
Date Last Updated2021/08/10