CVE-2018-8269 in Data.OData
Summary
by MITRE
A denial of service vulnerability exists when OData Library improperly handles web requests, aka "OData Denial of Service Vulnerability." This affects Microsoft.Data.OData.
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Analysis
by VulDB Data Team • 09/13/2025
The CVE-2018-8269 vulnerability represents a critical denial of service weakness within Microsoft's OData Library implementation, specifically affecting the Microsoft.Data.OData component. This vulnerability stems from improper handling of web requests within the OData processing framework, creating a potential avenue for attackers to disrupt service availability. The flaw manifests when the library fails to adequately validate or process incoming web requests, leading to resource exhaustion or application instability. The vulnerability impacts organizations utilizing Microsoft.Data.OData in their applications, particularly those implementing OData services for data access and manipulation. This weakness falls under the broader category of denial of service attacks that target application processing logic rather than network infrastructure, making it particularly insidious as it can be exploited through legitimate application interfaces.
The technical exploitation of CVE-2018-8269 occurs when malformed or specially crafted web requests are submitted to OData endpoints that utilize the vulnerable Microsoft.Data.OData library. The library's insufficient input validation mechanisms fail to properly handle these requests, causing the application to consume excessive system resources or enter an unstable state. This improper request handling can lead to application crashes, memory exhaustion, or thread starvation, effectively rendering the affected service unavailable to legitimate users. The vulnerability is classified as a resource exhaustion issue where the attacker can repeatedly submit malicious requests that cause the application to consume disproportionate amounts of CPU or memory resources. The flaw demonstrates poor error handling practices and inadequate request sanitization within the OData processing pipeline, creating a condition where normal application operations become impossible due to resource depletion.
The operational impact of this vulnerability extends beyond simple service disruption, potentially affecting business continuity and customer satisfaction for organizations relying on OData services. When exploited successfully, the vulnerability can cause cascading failures in applications that depend on the affected OData libraries, leading to extended downtime and potential data access issues. Organizations may experience increased support requests, service degradation, and potential revenue loss during exploitation periods. The vulnerability affects any system implementing Microsoft.Data.OData, including web applications, enterprise services, and cloud-based solutions that utilize OData protocols for data exchange. Attackers can leverage this weakness through automated tools to repeatedly probe systems, making it particularly dangerous for publicly accessible services. The impact is amplified when considering that many enterprise applications depend on OData for integration and data management, potentially affecting multiple systems simultaneously.
Mitigation strategies for CVE-2018-8269 should prioritize immediate patching of affected Microsoft.Data.OData components, as Microsoft released security updates to address the vulnerability. Organizations should implement rate limiting and request validation mechanisms at network boundaries to reduce the impact of potential exploitation attempts. Monitoring and logging of web request patterns can help identify malicious activity targeting the vulnerable OData endpoints. Network segmentation and access controls should be implemented to limit exposure of affected services to untrusted networks. The vulnerability aligns with CWE-400, which categorizes resource exhaustion flaws, and represents a classic example of how improper input handling can lead to denial of service conditions. Security teams should also consider implementing application firewalls and web application protection solutions that can detect and block malicious request patterns targeting OData services. Regular security assessments and vulnerability scanning should include checks for affected Microsoft.Data.OData versions to ensure comprehensive protection against this and similar vulnerabilities.