SB2020042909 - Multiple vulnerabilities in LearnPress – WordPress LMS Plugin

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper access control (CVE-ID: CVE-2020-11510)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in several tasks via AJAX actions that lacked nonce checks and capability checks. A remote authenticated attacker can send a specially crafted request to "wp-admin/admin-ajax.php", publish or trash any existing post or page, or create the default pages, or even set it to a nonexistent status.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-11511)

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the "LP Instructor" role grants the "unfiltered_html" capability. A remote attacker can send a specially crafted request to "wp-admin/admin-post.php" with the "action" parameter set to "accept-to-be-teacher" and the "user_id" parameter set to the ID of the user and elevate the permissions of a user of their choice.

Remediation

Install update from vendor's website.

References

• https://wpvulndb.com/vulnerabilities/10194/
• https://www.wordfence.com/blog/2020/04/high-severity-vulnerabilities-patched-in-learnpress/
• https://wpvulndb.com/vulnerabilities/10195/