SB2020030901 - Improper access control in WP Security Audit Log plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

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

The vulnerability exists due to improper access restrictions in the first-time install wizard in the "wp-security-audit-log/classes/Views/SetupWizard.php" script when the plugin registers the "setup_page" method via the "admin_init" hook. A remote attacker can run the wizard by accessing "wp-admin/admin-post.php?page=wsal-setup" and change every option of the plugin, leading to privilege escalation, sensitive data exposure and insecure deserialization.

Note: To exploit this vulnerability, the wizard must not have been completed, otherwise it won’t work.

Remediation

Install update from vendor's website.

References

• https://wpvulndb.com/vulnerabilities/10118/
• https://blog.nintechnet.com/vulnerabilities-fixed-in-wordpress-wp-security-audit-log-plugin/