Sensitive Information Exposure in Backup and Staging by WP Time Capsule

Executive Summary

The Backup and Staging by WP Time Capsule plugin for WordPress has a vulnerability in all versions up to and including 1.22.26. This vulnerability allows authenticated users with subscriber-level access or higher to download the most recently admin-decrypted SQL database backup file. This backup file typically contains sensitive information such as password hashes, user credentials, and other site configuration data. The vulnerability exists because the decrypted backup file is stored in the plugin's upload directory and can be accessed via the download_recent_decrypted_file_wptc function. However, exploitation requires that an administrator has previously decrypted a backup, causing the decrypted file to exist.

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Impact Analysis

This vulnerability can lead to sensitive information exposure. An attacker with subscriber-level access or higher can obtain the decrypted SQL backup file, which contains password hashes, user credentials, and other sensitive configuration data. This exposure can compromise user accounts and site security, potentially allowing further unauthorized access or attacks.

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Compliance Impact

This vulnerability allows authenticated attackers with subscriber-level access to download the most recently admin-decrypted SQL database backup, which typically contains password hashes, user credentials, and other sensitive site configuration data.

Exposure of such sensitive information can lead to violations of data protection regulations like GDPR and HIPAA, which require the protection of personal and sensitive data from unauthorized access.

Therefore, exploitation of this vulnerability could result in non-compliance with these standards due to the unauthorized disclosure of sensitive user data.

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Detection Guidance

This vulnerability can be detected by checking if the Backup and Staging by WP Time Capsule plugin is installed and running a vulnerable version up to and including 1.22.26.

Additionally, detection involves verifying whether an administrator has previously performed a decrypt action that causes the decrypted SQL backup file to exist in the plugin's upload directory.

Since the vulnerability allows authenticated users with subscriber-level access and above to download the most recently admin-decrypted SQL database backup, monitoring access logs for suspicious download requests to the 'recent_decrypted_file' option or the plugin's upload directory may help detect exploitation attempts.

Specific commands are not provided in the available resources.

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Mitigation Strategies

Immediate mitigation steps include updating the Backup and Staging by WP Time Capsule plugin to a version later than 1.22.26 where this vulnerability is fixed.

If an update is not immediately available, restrict subscriber-level and above users from accessing the plugin's upload directory or the decrypted backup files.

Also, avoid performing decrypt actions until the vulnerability is patched, as the decrypted SQL backup file is only created after such an action.

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