CVE-2020-35951: WordPress plugin vulnerability

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).

How to mitigate CVE-2020-35951

Time needed: 5 minutes.

Follow the instructions, as they will assist you in mitigating the WordPress vulnerability that been reported in CVE-2020-35951.

  1. Install the latest version of WordPress

    Navigate to the official WordPress website and download the latest version of WordPress. The latest version contains the CVE-2020-35951 fix.
    Update to the latest version

  2. Perform a vulnerability assessment

    Perform a scan on your WordPress environment(s), and check for vulnerabilities. Verify if CVE-2020-35951 has been mitigated.

  3. Utilize the references

    The CVE-2020-35951 references have been provided for a reason. Utilize these references and make sure that you are correctly informed.

References

  • wpscan.com/vulnerability/10348
  • www.wordfence.com/blog/2020/08/critical-vulnerabilities-patched-in-quiz-and-survey-master-plugin/
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