OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, an authorization bypass vulnerability in the patient portal signature endpoint allows authenticated portal users to upload and overwrite provider signatures by setting `type=admin-signature` and specifying any provider user ID. This could potentially lead to signature forgery on medical documents, legal compliance violations, and fraud. The issue occurs when portal users are allowed to modify provider signatures without proper authorization checks. Version 8.0.0 fixes the issue.
The vulnerability carries a CVSS score of 8.1, categorizing it as high severity. Risk to organizations includes potential forgery of signatures, which could have significant implications for legal compliance and trust in medical documentation. Organizations should prioritize patching immediately.
As of the latest information, there are no known public exploits or proofs of concept associated with this vulnerability. However, its exploitation could pose serious risks as it allows attackers to change critical data without authorization.
Given the nature of healthcare data and the importance of maintaining integrity and confidentiality, it is crucial for organizations using OpenEMR to address this vulnerability in their patch cycle. Failure to do so could result in unauthorized access to sensitive patient information and undermine trust in healthcare services.
Vulnerability Details
The vulnerability allows authenticated users to bypass authorization checks and modify provider signatures, leading to potential forgery. The CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, indicating a network attack vector, low complexity, and low privileges required. The integrity and confidentiality impacts are classified as high, while the availability impact is none.
Technical Analysis
This vulnerability occurs due to insufficient authorization checks in the patient portal's signature endpoint. Attackers may exploit this flaw by modifying requests to upload signatures, which can lead to serious legal ramifications. The attack complexity is low, requiring only authenticated access to the portal.
Risk & Impact Analysis
Organizations using OpenEMR should recognize the potential impact of this vulnerability, as it can lead to significant legal and reputational risks. The ability for unauthorized users to alter signatures not only jeopardizes document integrity but also exposes organizations to compliance violations. Given the high CVSS score, this vulnerability should be treated with urgency. Organizations should address in priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of OpenEMR prior to version 8.0.0 are affected by this vulnerability. Organizations should ensure they upgrade to version 8.0.0 or later to mitigate this risk.
Mitigation & Remediation
To mitigate this vulnerability, organizations should immediately upgrade to OpenEMR version 8.0.0 or later. If an upgrade cannot be applied immediately, consider implementing access controls and monitoring to detect unauthorized modifications. Regular audits of signature practices can also help ensure compliance and integrity.
For further security best practices, organizations can refer to the penetration testing services offered by AppSecure.
Detection Guidance
Organizations should monitor logs for any unauthorized requests to modify provider signatures. Any anomalies in user activity related to signature uploads should be flagged for review. Implementing alerts for unauthorized access attempts can aid in early detection.
AppSecure Threat Intelligence Insight
The authorization bypass vulnerability in OpenEMR highlights the critical need for robust authorization checks in web applications, particularly in sensitive areas like healthcare. As this vulnerability indicates, attackers may exploit weaknesses in authorization to manipulate critical data, leading to severe consequences.
Security teams should prioritize regular audits of their applications to identify and rectify potential authorization issues before they can be exploited. For more insights into application security, consider reviewing our vulnerability management program design.
In light of this vulnerability, consider implementing ongoing security assessments, including penetration testing methodologies, to proactively identify and mitigate similar vulnerabilities.
Overall, this case serves as a reminder of the importance of security in healthcare applications, where the stakes are high, and the impact of vulnerabilities can be profound.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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