CVE-2023-48655 in MISP
Summary
by MITRE • 11/17/2023
An issue was discovered in MISP before 2.4.176. app/Controller/Component/IndexFilterComponent.php does not properly filter out query parameters.
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Analysis
by VulDB Data Team • 06/23/2026
The vulnerability identified as CVE-2023-48655 affects the MISP (Malware Information Sharing Platform) software version prior to 2.4.176, specifically within the IndexFilterComponent.php file. This represents a critical security flaw that undermines the platform's ability to properly sanitize user input, creating potential attack vectors for malicious actors seeking to exploit the system's query parameter handling mechanisms. The issue stems from insufficient validation and filtering of parameters passed through the application's indexing functionality, which is a core component of MISP's data management and search capabilities.
The technical flaw manifests in the improper handling of query parameters within the IndexFilterComponent, which is responsible for processing search queries and filtering data within the MISP environment. This component fails to adequately validate or sanitize input parameters that users might submit through web interfaces or API calls, allowing potentially malicious data to bypass normal security controls. The vulnerability creates a path for attackers to inject unauthorized parameters that could alter the intended behavior of the application's search and filtering mechanisms. This type of flaw falls under the CWE-20 category of "Improper Input Validation" and represents a classic example of parameter pollution or injection attacks that can lead to unauthorized data access or manipulation.
The operational impact of this vulnerability extends beyond simple data integrity concerns, as it could enable attackers to bypass access controls and potentially gain unauthorized access to sensitive threat intelligence data stored within the MISP platform. Given that MISP systems are widely used by security professionals, law enforcement agencies, and organizations for sharing critical malware and threat information, exploitation of this vulnerability could result in significant compromise of threat intelligence assets. Attackers might leverage this flaw to manipulate search results, access restricted datasets, or potentially execute unauthorized operations within the platform. The vulnerability also aligns with ATT&CK technique T1078.004 which covers "Valid Accounts: Cloud Accounts" and could be used in conjunction with other techniques to establish persistent access within security operations centers that rely on MISP for threat intelligence management.
Organizations using MISP versions prior to 2.4.176 should immediately implement mitigation strategies including updating to the patched version, implementing additional input validation measures, and reviewing access controls within their MISP deployments. The recommended approach involves applying the official security patch released by the MISP development team, which addresses the specific filtering mechanism in IndexFilterComponent.php. Additional defensive measures include implementing web application firewalls to monitor and filter suspicious parameter patterns, conducting thorough security audits of MISP configurations, and establishing monitoring procedures to detect anomalous query behaviors that might indicate exploitation attempts. Security teams should also consider implementing network segmentation controls around MISP systems and establishing incident response procedures specifically tailored to address potential exploitation of this vulnerability in threat intelligence environments.