High severity · published Apr 12, 2021
CVE-2021-24221
The Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin before 7.1.12 did not sanitise the result_id GET parameter on pages with the [qsm_result]…
8.8
CVSS
1.9%
EPSS
No
On KEV
Description
The Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress plugin before 7.1.12 did not sanitise the result_id GET parameter on pages with the [qsm_result] shortcode without id attribute, concatenating it in a SQL statement and leading to an SQL injection. The lowest role allowed to use this shortcode in post or pages being author, such user could gain unauthorised access to the DBMS. If the shortcode (without the id attribute) is embed on a public page or post, then unauthenticated users could exploit the injection.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QA
Quiz And Survey Master · Expresstech
before 7.1.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-24221
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-24221
Patch
https://plugins.trac.wordpress.org/changeset/2479603/
Exploit
https://wpscan.com/vulnerability/3b52b25c-82a1-41c7-83ac-92e244f7c5ab
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