Vulnerability identifier: #VU23606

Vulnerability risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17599

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Quiz And Survey Master – Best Quiz Plugin for WordPress
Web applications / Modules and components for CMS

Vendor: QSM Team

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via the "from" or "till" parameter (and/or the "quiz_id" parameter) in the "/quiz-master-next/php/admin/quiz-options-page.php" file. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Quiz And Survey Master – Best Quiz Plugin for WordPress: 0.1 - 6.3.4

---

External links
http://github.com/QuizandSurveyMaster/quiz_master_next/issues/795
http://github.com/QuizandSurveyMaster/quiz_master_next/pull/796
http://wordpress.org/plugins/quiz-master-next/#developers
http://wpvulndb.com/vulnerabilities/9977

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.