CVE-2024-13424 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Ni Sales Commission For WooCommerce plugin for WordPress. The issue stems from the lack of a proper capability check on the 'niwoosc_ajax' AJAX endpoint in all plugin versions up to and including 1.2.4. This endpoint is accessible to authenticated users with Subscriber-level privileges or higher, which are relatively low-level permissions in WordPress. Due to the missing authorization, these users can update the plugin’s settings and modify commission amounts arbitrarily. The vulnerability does not require user interaction and can be exploited remotely over the network (AV:N). The attack complexity is low (AC:L), and only requires privileges equivalent to a Subscriber (PR:L). The scope is unchanged (S:U), and the impact affects integrity (I:L) but not confidentiality or availability. This means attackers cannot steal data or disrupt service but can alter commission data, potentially causing financial discrepancies or fraud. No patches or fixes are currently linked, and no known exploits have been reported in the wild, but the vulnerability poses a risk to organizations relying on this plugin for sales commission management. Given the widespread use of WooCommerce and WordPress, this vulnerability could be leveraged by insiders or compromised accounts to manipulate commission data.

The primary impact of CVE-2024-13424 is on data integrity within organizations using the Ni Sales Commission For WooCommerce plugin. Unauthorized users with Subscriber-level access can alter commission settings and amounts, potentially leading to financial fraud, inaccurate sales reporting, and loss of trust in the e-commerce system. While confidentiality and availability remain unaffected, the ability to manipulate commission data can have significant business consequences, including incorrect payouts, disputes with sales personnel, and financial losses. The vulnerability could be exploited by malicious insiders or attackers who have gained low-level access to the WordPress site. This risk is amplified in organizations with multiple users having Subscriber or higher roles, especially where role management is lax. The lack of known exploits in the wild suggests limited current exploitation, but the low complexity and ease of exploitation mean the threat could increase if attackers develop exploit code. Organizations relying on this plugin for commission management should consider this vulnerability a moderate risk to business operations and financial integrity.

1. Immediately restrict Subscriber-level user capabilities to the minimum necessary, ensuring that only trusted users have Subscriber or higher roles. 2. Monitor and audit user roles and activities related to the WooCommerce plugin, focusing on changes to commission settings. 3. Implement web application firewalls (WAFs) with custom rules to detect and block unauthorized AJAX requests to the 'niwoosc_ajax' endpoint from low-privilege users. 4. If possible, disable or restrict access to the vulnerable AJAX endpoint until a patch is released. 5. Regularly update the Ni Sales Commission For WooCommerce plugin once a security patch is available from the vendor. 6. Employ multi-factor authentication (MFA) for all WordPress user accounts to reduce the risk of account compromise. 7. Conduct internal training to raise awareness about the risks of privilege misuse and encourage strict role management. 8. Review and harden WordPress security configurations, including limiting plugin installations and enforcing the principle of least privilege for all users.