Quiz And Survey Master: Arbitrary file deletion
Quiz And Survey Master is affected by arbitrary file deletion. The vulnerable path is reachable without authentication. A successful request can remove files outside the intended scope and may make the site unavailable.
- Component
- Quiz And Survey Master
- Plugin slug
quiz-and-survey-master- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Jan 01, 2021
This CVE was published Jan 01, 2021 and is one of 17 known issues for this plugin.
Update, patch or deactivate.
Update Quiz And Survey Master to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It allows users to delete arbitrary files such as wp-config.php file, which could effectively take a site offline and allow an attacker to reinstall with a WordPress instance under their control. This occurred via qsm_remove_file_fd_question, which allowed unauthenticated deletions (even though it was only intended for a person to delete their own quiz-answer files).
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H
NVD vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H