CVE-2021-39376 in Tasy Electronic Medical Record
Summary
by MITRE • 08/24/2021
Philips Healthcare Tasy Electronic Medical Record (EMR) 3.06 allows SQL injection via the CorCad_F2/executaConsultaEspecifico IE_CORPO_ASSIST or CD_USUARIO_CONVENIO parameter.
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Analysis
by VulDB Data Team • 08/26/2021
The vulnerability identified as CVE-2021-39376 affects Philips Healthcare Tasy Electronic Medical Record version 3.06, a critical component in healthcare information systems that manages patient medical records and clinical data. This specific flaw represents a significant security weakness within the application's input validation mechanisms, potentially compromising the integrity and confidentiality of sensitive patient health information stored within the system. The vulnerability exists within the CorCad_F2/executaConsultaEspecifico endpoint, which serves as a crucial interface for executing specific database queries related to patient care and medical records management.
The technical implementation of this SQL injection vulnerability occurs through the manipulation of two specific parameters: IE_CORPO_ASSIST and CD_USUARIO_CONVENIO. These parameters are processed without adequate input sanitization or parameterized query construction, allowing malicious actors to inject arbitrary SQL commands into the database layer. The vulnerability stems from insufficient validation of user-supplied input data, which directly translates to the application's failure to properly escape or filter special characters that could alter the intended SQL query execution. This flaw falls under the CWE-89 category of SQL Injection, representing a well-documented and dangerous class of vulnerabilities that have been consistently ranked among the top cybersecurity risks by organizations such as OWASP.
The operational impact of this vulnerability extends beyond simple data theft, as it creates potential pathways for unauthorized access to sensitive patient medical records, treatment histories, and personal health information. Attackers could leverage this vulnerability to extract confidential data, modify existing records, or potentially escalate privileges within the system to gain administrative access. The healthcare environment presents particularly high stakes for such vulnerabilities, as compromised patient data could lead to identity theft, medical fraud, and serious privacy violations that violate regulatory requirements under HIPAA and similar healthcare privacy laws. The attack surface is particularly concerning given that this vulnerability affects a core EMR system used for critical patient care operations, meaning that successful exploitation could disrupt healthcare delivery while simultaneously exposing sensitive medical information.
Mitigation strategies for this vulnerability should prioritize immediate patching and implementation of proper input validation measures within the affected application. Organizations should implement parameterized queries or prepared statements to prevent SQL injection attacks, alongside comprehensive input sanitization and output encoding mechanisms. Network segmentation and access controls should be reinforced to limit exposure of the vulnerable endpoint, while monitoring systems should be deployed to detect anomalous database access patterns that might indicate exploitation attempts. The remediation process should include thorough code review and security testing to ensure that similar vulnerabilities do not exist in other components of the healthcare information system. Additionally, implementing web application firewalls and database activity monitoring solutions can provide additional layers of defense against exploitation attempts, aligning with the defensive strategies recommended in the MITRE ATT&CK framework for database-related threats and command execution attacks.