CVE-2018-8097 in Eve
Summary
by MITRE
io/mongo/parser.py in Eve (aka pyeve) before 0.7.5 allows remote attackers to execute arbitrary code via Code Injection in the where parameter.
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Analysis
by VulDB Data Team • 02/22/2023
The CVE-2018-8097 vulnerability resides within the Eve framework's mongo parser component, specifically in the io/mongo/parser.py file. This security flaw affects versions prior to 0.7.5 and represents a critical code injection vulnerability that can be exploited by remote attackers to execute arbitrary code on affected systems. The vulnerability manifests when the where parameter is processed within the framework's MongoDB query parsing logic, creating an avenue for malicious input to be interpreted as executable code rather than mere query parameters.
This vulnerability stems from inadequate input validation and sanitization within the Eve framework's database query handling mechanism. The where parameter in MongoDB queries typically accepts complex query expressions that should be strictly validated and sanitized before execution. However, the parser in affected versions fails to properly escape or validate user-supplied input, allowing attackers to inject malicious code that gets executed within the context of the running application. The flaw essentially permits attackers to bypass normal query parsing restrictions and execute arbitrary Python code on the server hosting the Eve application.
The operational impact of this vulnerability is severe and far-reaching, as it provides attackers with complete control over the affected system. An attacker could leverage this vulnerability to execute commands, access sensitive data, modify database content, or even establish persistent backdoors within the application environment. Since Eve is commonly used for building RESTful APIs, the exploitation could compromise entire data services and potentially lead to broader system compromise. The remote nature of the attack means that an attacker does not need physical access to the system, making this vulnerability particularly dangerous in cloud and web-based deployments.
The vulnerability aligns with CWE-94, which describes "Improper Control of Generation of Code ('Code Injection')" and maps to ATT&CK technique T1059.006 for "Command and Scripting Interpreter: Python". Organizations utilizing Eve frameworks in production environments should immediately implement mitigations including upgrading to version 0.7.5 or later, implementing strict input validation measures, and applying web application firewalls to filter suspicious query parameters. Additionally, security monitoring should be enhanced to detect unusual query patterns that might indicate exploitation attempts, and access controls should be strengthened to limit the potential impact of successful attacks. The remediation process should also include thorough code reviews of any custom extensions or modifications to the Eve framework that might introduce similar vulnerabilities.