CVE-2023-4435 in inure
Summary
by MITRE • 08/20/2023
Improper Input Validation in GitHub repository hamza417/inure prior to build88.
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Analysis
by VulDB Data Team • 05/25/2026
The vulnerability in the GitHub repository hamza417/inure prior to build88 represents a critical improper input validation flaw that exposes the system to potential arbitrary code execution and privilege escalation attacks. This issue stems from insufficient sanitization of user-provided inputs within the application's processing pipeline, creating an attack surface where malicious actors can inject harmful data that gets executed without proper validation checks. The vulnerability manifests when the application fails to properly validate or sanitize inputs received from external sources, allowing attackers to manipulate the system behavior through crafted payloads. According to CWE-20 standards, this classification encompasses weaknesses where applications fail to validate input data, leading to various security consequences including but not limited to command injection, code execution, and data corruption. The attack vector typically involves sending malformed input through application interfaces, API endpoints, or configuration mechanisms where the system assumes input integrity without proper verification.
The technical implementation of this vulnerability allows attackers to bypass security controls through carefully constructed input sequences that exploit the lack of proper validation mechanisms. When the application processes these inputs without adequate sanitization, it creates opportunities for attackers to execute arbitrary commands or scripts within the application context. This flaw particularly impacts systems where user inputs are directly incorporated into system commands, database queries, or configuration settings without proper escaping or encoding. The vulnerability's impact extends beyond simple data manipulation as it can enable full system compromise when combined with other attack techniques. Attackers leveraging this weakness can potentially escalate privileges, access sensitive data, or disrupt system operations through the exploitation of the input validation gaps. The specific nature of the vulnerability suggests it may be present in input handling functions, form processors, or API request handlers where the application fails to implement proper input filtering or validation routines.
The operational impact of this vulnerability creates significant risks for organizations deploying applications built on or using the affected repository. Systems utilizing this codebase become susceptible to automated exploitation attempts, where attackers can leverage known patterns to compromise multiple instances simultaneously. The vulnerability's presence in a widely accessible repository means that any organization using this code without proper patching or input validation measures faces immediate security exposure. The risk assessment indicates that this vulnerability aligns with ATT&CK technique T1059, which covers command and scripting interpreter, as attackers can leverage the input validation flaw to execute malicious commands through the application interface. Organizations may experience data breaches, system downtime, and compliance violations as a direct result of this vulnerability, particularly in environments where sensitive information processing occurs. The attack surface expands when considering that this vulnerability can be exploited through various entry points including web interfaces, API endpoints, or configuration management systems.
Mitigation strategies for this vulnerability require immediate implementation of comprehensive input validation controls and security hardening measures. Organizations should deploy proper input sanitization routines that validate, filter, and encode all user inputs before processing, implementing both client-side and server-side validation mechanisms. The recommended approach includes implementing whitelisting techniques, using parameterized queries for database operations, and ensuring proper escaping of special characters in input handling. Security teams should also implement automated vulnerability scanning and input validation testing as part of their continuous integration processes to prevent similar issues in future releases. The implementation of proper access controls and privilege separation can further reduce the impact of successful exploitation attempts. Additionally, organizations should establish robust monitoring and logging mechanisms to detect suspicious input patterns and potential exploitation attempts. Regular security updates and patches should be applied to ensure that the repository codebase remains free from known vulnerabilities, while maintaining proper version control and dependency management practices to prevent the introduction of similar flaws in future development cycles.