Executive Summary

The Bogo plugin for WordPress has a vulnerability in versions up to 3.9.1 that allows authenticated users with subscriber-level access or higher to expose sensitive information. Specifically, these users can exploit the bogo_rest_create_post_translation endpoint to duplicate posts written in a non-default locale and then read the raw title, content, excerpt, and password of private, draft, or password-protected posts. This happens because the permission checks allow subscribers to request translations into the site's default locale, bypassing locale-only restrictions, and contributors can actually read the duplicated content.

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Impact Analysis

This vulnerability can lead to sensitive information exposure. Attackers with subscriber-level access can extract confidential data from private, draft, or password-protected posts, including their titles, content, excerpts, and passwords. This could result in unauthorized disclosure of information that was intended to be restricted, potentially compromising privacy and confidentiality within the WordPress site.

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Detection Guidance

This vulnerability involves the Bogo WordPress plugin's REST API endpoint bogo_rest_create_post_translation, which can be triggered by authenticated users with subscriber-level access or higher to duplicate posts and extract sensitive information.

To detect exploitation attempts on your system, you can monitor REST API requests targeting the translation endpoint related to post duplication, especially those made by users with subscriber or contributor roles.

Suggested commands include inspecting web server logs or WordPress REST API access logs for POST requests to endpoints resembling /wp-json/bogo/v1/ or similar paths that handle post translation creation.

• Use grep or similar tools to search for suspicious REST API calls in your logs, for example: grep -i 'bogo_rest_create_post_translation' /var/log/apache2/access.log
• Check for unusual POST requests from subscriber or contributor user agents or IP addresses.

Additionally, monitoring for unexpected access to private, draft, or password-protected posts via the REST API can help identify attempts to exploit this vulnerability.

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Mitigation Strategies

The primary mitigation step is to update the Bogo plugin to a version that includes the security fix, which enhances authorization checks in the REST API to prevent unauthorized access to post translations.

If an immediate update is not possible, restrict REST API access to authenticated users with appropriate permissions and consider limiting subscriber or contributor roles from accessing the translation endpoint.

Implement monitoring and alerting on suspicious REST API calls related to post duplication or translation creation.

Review and tighten user role capabilities, ensuring that only trusted users have contributor-level or higher access.

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Compliance Impact

This vulnerability allows authenticated users with subscriber-level access or higher to extract sensitive information such as the raw title, content, excerpt, and password of private, draft, or password-protected posts. Exposure of such sensitive information could potentially lead to non-compliance with data protection regulations like GDPR or HIPAA, which require protection of sensitive and private data from unauthorized access.

However, the vulnerability is limited to authenticated users with at least subscriber-level permissions, and the exploit requires triggering a translation duplication endpoint. The impact is primarily on confidentiality of post content rather than broader personal data exposure.

The fix introduced stricter permission checks to ensure that only users with appropriate editing capabilities can access sensitive post data, which helps mitigate risks related to unauthorized data exposure and supports compliance efforts.

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