CVE-2020-8893 in MISP
Summary
by MITRE
An issue was discovered in MISP before 2.4.121. The Galaxy view contained an incorrectly sanitized search string in app/View/Galaxies/view.ctp.
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Analysis
by VulDB Data Team • 03/30/2024
The vulnerability identified as CVE-2020-8893 affects the MISP (Malware Information Sharing Platform) software version prior to 2.4.121, specifically within the Galaxy view component. This issue represents a security flaw in the application's input validation mechanisms that could potentially allow malicious actors to exploit the system through improper sanitization of user-supplied search parameters. The vulnerability exists in the file app/View/Galaxies/view.ctp which handles the display and search functionality for galaxy data within the MISP interface.
The technical flaw stems from insufficient sanitization of search strings passed to the Galaxy view functionality, creating a potential injection vector for malicious input. When users perform searches within the galaxy view, the application fails to properly sanitize the input parameters before processing them, which could enable attackers to inject unintended code or manipulate the search behavior. This vulnerability falls under the category of input validation and sanitization failures, aligning with CWE-20, which describes improper input sanitization leading to injection attacks. The weakness specifically manifests in the application's failure to properly escape or filter user-provided search terms before they are processed and displayed within the galaxy view interface.
The operational impact of this vulnerability extends beyond simple data manipulation as it could potentially allow attackers to execute unauthorized actions within the MISP environment. An attacker who successfully exploits this vulnerability could gain unauthorized access to sensitive threat intelligence data, manipulate search results to hide malicious indicators, or potentially execute arbitrary code within the context of the web application. This represents a significant risk to organizations relying on MISP for threat intelligence sharing, as the compromise of the galaxy view functionality could undermine the integrity of the entire threat intelligence platform. The vulnerability could be exploited through various attack vectors including cross-site scripting attempts or other injection-based attacks that leverage the improperly sanitized search parameters.
Mitigation strategies for CVE-2020-8893 require immediate deployment of the patched MISP version 2.4.121 or later, which contains the necessary sanitization fixes for the Galaxy view component. Organizations should implement comprehensive input validation measures that enforce strict sanitization of all user-provided search parameters before they are processed by the application. The remediation should include implementing proper HTML escaping and output encoding techniques to prevent malicious code execution in the search results display. Security teams should also consider implementing web application firewalls with rules specifically designed to detect and block suspicious search parameter patterns that could indicate exploitation attempts. Additionally, regular security assessments and code reviews should be conducted to identify similar input validation issues within the MISP codebase, following ATT&CK framework principles for defensive measures against injection attacks. Organizations should also implement monitoring solutions that can detect anomalous search behavior patterns that might indicate exploitation attempts against the galaxy view functionality.