CVE-2022-0895 in Microweber
Summary
by MITRE • 03/10/2022
Static Code Injection in GitHub repository microweber/microweber prior to 1.3.
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Analysis
by VulDB Data Team • 03/12/2022
The vulnerability identified as CVE-2022-0895 represents a static code injection flaw discovered in the microweber content management system prior to version 1.3. This issue resides within the GitHub repository microweber/microweber and constitutes a significant security weakness that could allow unauthorized code execution. The vulnerability stems from improper input validation and sanitization mechanisms within the application's codebase, specifically affecting how user-supplied data is processed and integrated into the system's operational flow. The flaw allows attackers to inject malicious code that gets executed within the context of the application, potentially leading to complete system compromise.
The technical implementation of this vulnerability involves the application's failure to properly sanitize user inputs before incorporating them into static code structures. When users submit data through various input points such as forms, API endpoints, or configuration parameters, the system does not adequately validate or escape these inputs before they are processed. This creates an environment where malicious actors can craft payloads that, when processed, result in the injection of arbitrary code into the application's execution context. The vulnerability is classified under CWE-94, which specifically addresses "Improper Control of Generation of Code ('Code Injection')" and aligns with ATT&CK technique T1059.001 for command and script injection. The flaw particularly affects the application's template processing and dynamic code generation capabilities where user inputs are directly incorporated into code execution paths without proper security controls.
The operational impact of CVE-2022-0895 extends beyond simple data theft or service disruption, as it enables full system compromise through code execution. Attackers exploiting this vulnerability can gain unauthorized access to the underlying server, potentially leading to data breaches, system infiltration, and lateral movement within network environments. The static nature of the injection means that the malicious code is embedded directly into the application's codebase, making it persistent and difficult to detect through standard monitoring mechanisms. Organizations running vulnerable versions of microweber face risks including unauthorized data access, system modification, and potential use as a foothold for further attacks. The vulnerability's impact is amplified by the fact that it affects the core application functionality, making it particularly dangerous for websites and web applications that rely on microweber for content management and business operations.
Mitigation strategies for this vulnerability require immediate action to upgrade to version 1.3 or later, which includes proper input validation and sanitization mechanisms. System administrators should implement comprehensive input filtering and output encoding controls, ensuring that all user-supplied data undergoes strict validation before being processed. The remediation process should include code review practices to identify similar injection vulnerabilities across the application's codebase and implementation of secure coding guidelines. Organizations should also deploy web application firewalls and intrusion detection systems to monitor for exploitation attempts. Additionally, regular security assessments and penetration testing should be conducted to identify potential injection points and other security weaknesses. The fix addresses the root cause by implementing proper sanitization of user inputs and ensuring that dynamic code generation processes properly escape or validate all external data sources. This vulnerability highlights the critical importance of input validation in web applications and aligns with security frameworks that emphasize defense-in-depth strategies to prevent code injection attacks.