Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability in the OpenEMR fax and SMS module could allow authenticated attackers to read or write arbitrary files on the system, potentially exposing sensitive credentials and source code, or enabling the execution of malicious code. The main concern is confirming relevance and exposure.
- Access to files and code is compromised.
- Important for protecting sensitive patient data.
- Confirm if our systems use this software.
Attack Path
How an attacker could exploit the issue
An attacker with administrative privileges could exploit this vulnerability by leveraging a specific method within the fax and SMS module. This method's input can be manipulated to reference arbitrary files on the system, potentially leading to the disclosure of sensitive information or the execution of malicious code.
- Requires authenticated access.
- Exploits a file path parameter.
- Risks credential theft and code execution.
Live Threat
Current exploitation, exposure, and threat context
Authenticated users could exploit this vulnerability to read sensitive files or write arbitrary files, potentially leading to unauthorized access or execution of malicious code. This could occur when the `disposeDocument()` method is invoked with a crafted `file_path` parameter.
- Sensitive system and user files could be exposed.
- Arbitrary file read and write access is possible.
- Compromise of system integrity and confidentiality.
Operational Fix
Recommended remediation, mitigation, and detection steps
The OpenEMR application owner and platform team are likely responsible for addressing this vulnerability, as it impacts a critical healthcare system. The first practical step is to identify all instances of OpenEMR, confirm their network exposure and business criticality, and then assign an owner for remediation planning.
- Identify OpenEMR instances and ownership.
- Verify network exposure and business impact.
- Plan remediation or implement mitigations.
