CVE-2018-1647 in QRadar Incident Forensics
Summary
by MITRE
IBM QRadar Incident Forensics 7.2 and 7.3 does not properly restrict the size or amount of resources requested which could allow an unauthenticated user to cause a denial of service. IBM X-Force ID: 144650.
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Analysis
by VulDB Data Team • 05/22/2023
IBM QRadar Incident Forensics version 7.2 and 7.3 contains a critical vulnerability that allows unauthenticated attackers to exploit resource exhaustion mechanisms through improper input validation. This vulnerability falls under the category of insufficient resource management as classified by CWE-400, where the system fails to adequately constrain the size or quantity of resources that can be requested by external entities. The flaw specifically manifests in the application's handling of incoming requests that exceed normal operational parameters, creating a pathway for malicious actors to consume excessive system resources without proper authentication or authorization.
The technical implementation of this vulnerability stems from inadequate bounds checking and resource allocation controls within the application's request processing pipeline. When an attacker submits malformed or excessively large requests to the QRadar Incident Forensics service, the system does not properly validate the request parameters or enforce resource limits that would normally prevent such consumption patterns. This lack of input sanitization creates an environment where an unauthenticated user can submit requests that gradually deplete system memory, CPU cycles, or other critical resources until the service becomes unavailable or crashes entirely.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the integrity of forensic investigations and incident response capabilities. Organizations relying on QRadar Incident Forensics for security operations may experience complete service outages during critical security events, undermining their ability to respond to actual threats. The vulnerability is particularly concerning because it affects versions 7.2 and 7.3, which were widely deployed in enterprise environments, potentially exposing numerous organizations to sustained denial of service attacks. Attackers could leverage this weakness to perform prolonged resource exhaustion attacks that would be difficult to distinguish from legitimate operational issues, complicating incident response and forensic analysis efforts.
Mitigation strategies should focus on implementing comprehensive input validation and resource limiting mechanisms within the application's request handling components. Organizations should consider deploying network-level controls such as rate limiting and connection throttling to prevent excessive resource consumption from single sources. The implementation of proper access controls and authentication mechanisms should be enforced to restrict direct access to vulnerable endpoints. Additionally, regular monitoring and alerting should be established to detect unusual resource consumption patterns that may indicate exploitation attempts. According to ATT&CK framework category T1499, this vulnerability aligns with resource exhaustion techniques that target application availability. System administrators should also ensure that all QRadar Incident Forensics installations are updated to patched versions that address this specific resource management flaw. The vulnerability's classification under CWE-400 emphasizes the need for proper resource management practices including input validation, size constraints, and appropriate error handling to prevent attackers from exploiting these weaknesses. Organizations should also implement network segmentation and firewall rules to limit access to the affected service to only trusted administrative networks, reducing the attack surface available to unauthenticated users.