CVE-2024-35252 identifies a denial of service (DoS) vulnerability in the Microsoft Azure Storage Movement Client Library, specifically version 1.0.0. The root cause is the use of unmaintained third-party components (CWE-1104), which introduces security risks due to lack of updates and patches. This vulnerability allows remote attackers to cause a denial of service without requiring authentication or user interaction, exploiting the network attack vector with low attack complexity. The CVSS 3.1 score of 7.5 reflects a high severity level, emphasizing the impact on availability (A:H) while confidentiality and integrity remain unaffected. The vulnerability is publicly disclosed but currently has no known exploits in the wild. The issue arises because unmaintained components may contain bugs or weaknesses that can be triggered to crash or degrade the service, leading to downtime or degraded performance of Azure Storage services. Since Azure Storage is a widely used cloud storage solution, this vulnerability could disrupt data movement and storage operations, impacting business continuity. The lack of available patches at the time of disclosure suggests that organizations must implement interim mitigations and monitor for updates from Microsoft. The vulnerability highlights the risks associated with third-party dependencies in cloud services and the importance of maintaining component lifecycle management.

For European organizations, this vulnerability poses a significant risk to the availability of cloud storage services hosted on Microsoft Azure. Disruption of Azure Storage can affect data accessibility, backup operations, and application functionality dependent on cloud storage, potentially causing operational downtime and financial losses. Critical sectors such as finance, healthcare, and government services that rely heavily on Azure for data storage and movement may experience service interruptions, impacting end-users and regulatory compliance. The vulnerability does not compromise data confidentiality or integrity, but the denial of service could hinder business continuity and disaster recovery processes. Given the widespread adoption of Azure in Europe, especially in countries with strong cloud infrastructure investments, the potential impact is broad. Additionally, the lack of authentication and user interaction requirements lowers the barrier for attackers to exploit this vulnerability remotely, increasing the threat landscape. Organizations using the affected version should assess their exposure and prepare for possible service degradation or outages.

1. Monitor official Microsoft channels for patches or updates addressing CVE-2024-35252 and apply them promptly once available. 2. Conduct an inventory of Azure Storage Movement Client Library usage within the organization to identify affected deployments running version 1.0.0. 3. Where possible, upgrade to newer, maintained versions of the client library or replace the unmaintained third-party components with supported alternatives. 4. Implement network-level protections such as rate limiting, traffic filtering, and anomaly detection to mitigate potential denial of service attempts targeting Azure Storage endpoints. 5. Establish robust monitoring and alerting on Azure Storage service health and performance metrics to detect early signs of service disruption. 6. Develop and test incident response plans specifically for cloud storage service outages to minimize operational impact. 7. Engage with Microsoft support for guidance and potential workarounds until official patches are released. 8. Review third-party component management policies to prevent future use of unmaintained libraries in critical infrastructure.