Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability exists in the "Pay with a tweet" WordPress plugin that allows users with low-level access to delete any file on the server, potentially leading to a complete website takeover. This issue stems from the plugin's failure to properly check file paths before deletion and to restrict access to its administrative functions.
- Low-access users can delete any server file.
- Affects public-facing websites, enabling full compromise.
- Confirm if this plugin is in use on our sites.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this vulnerability by initiating a request to a vulnerable WordPress site. If the attacker can trick a user with a low-level role, such as a Subscriber, into performing a specific action within the site's administration area, they can trigger the deletion of arbitrary files. This file deletion can ultimately lead to a complete compromise of the website.
- Requires low-privilege user access.
- Triggers file deletion via administration screens.
- Can result in full site compromise.
Live Threat
Current exploitation, exposure, and threat context
A critical vulnerability exists in the "Pay with a tweet" WordPress plugin that allows authenticated users, even with the lowest privilege role, to delete arbitrary files on the server. This could lead to a complete website compromise under supported conditions.
- Arbitrary server files.
- Unrestricted file deletion via administration screens.
- Potential for full website compromise.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability in the "Pay with a tweet" WordPress plugin could allow low-privileged users to delete arbitrary server files, leading to a full site compromise. The first practical step is to identify all WordPress sites using this plugin, confirm their accessibility and business criticality, and then assign ownership for remediation planning.
- Plugin owners should coordinate remediation.
- Verify all WordPress sites using the plugin.
- Plan risk-based remediation actions.
