Multiple vulnerabilities in Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress

Published: 2020-08-14

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	N/A
CWE-ID	CWE-434 CWE-264
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	Quiz And Survey Master – Best Quiz Plugin for WordPress Web applications / Modules and components for CMS
Vendor	QSM Team

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Arbitrary file upload

EUVDB-ID: #VU45697

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote attacker can upload a malicious file and execute it on the server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Quiz And Survey Master – Best Quiz Plugin for WordPress: 0.1 - 7.0.0

External links

http://wpvulndb.com/vulnerabilities/10349/
http://www.wordfence.com/blog/2020/08/critical-vulnerabilities-patched-in-quiz-and-survey-master-plugin/
http://www.youtube.com/watch?v=sC4U-oNW34c

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Arbitrary File Deletion

EUVDB-ID: #VU45698