Published:2021/08/10  Last Updated:2021/08/10

JVN#65388002
WordPress Plugin "Quiz And Survey Master" vulnerable to cross-site scripting

Overview

WordPress Plugin "Quiz And Survey Master" contains a cross-site scripting vulnerability.

Products Affected

Quiz And Survey Master versions prior to 7.1.14

Description

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.

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.

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score: 6.1
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:N/AC:H/Au:N/C:N/I:P/A:N
Base Score: 2.6
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Credit

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.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2021-20792
JVN iPedia JVNDB-2021-000075