CVE-2022-24470 in Azure Site Recovery VMWare to Azure
Summary
by MITRE • 03/09/2022
Azure Site Recovery Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-24467, CVE-2022-24468, CVE-2022-24471, CVE-2022-24517, CVE-2022-24520.
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Analysis
by VulDB Data Team • 03/11/2022
The Azure Site Recovery service represents a critical component within Microsoft's cloud infrastructure, providing disaster recovery capabilities for virtual machines across on-premises and cloud environments. This vulnerability specifically targets the remote code execution functionality within the Azure Site Recovery service, creating a significant security risk for organizations relying on this Microsoft cloud service for their business continuity and disaster recovery operations. The vulnerability affects the service's ability to properly validate and process incoming requests, potentially allowing unauthorized actors to execute arbitrary code on affected systems. Security researchers have identified that this flaw exists in the service's handling of specific API calls and data processing workflows that are essential for coordinating replication and recovery operations between source and target environments.
The technical exploitation of this vulnerability stems from improper input validation within the Azure Site Recovery service components responsible for processing configuration data and replication commands. Attackers can craft malicious payloads that exploit this weakness to bypass authentication mechanisms and gain unauthorized access to the service's underlying infrastructure. The flaw manifests when the system fails to properly sanitize user-supplied data before processing, allowing crafted inputs to be interpreted as executable code rather than benign configuration parameters. This type of vulnerability falls under the CWE-74 category of Improper Neutralization of Special Elements in Output Used by a Downstream Component, specifically within the context of remote code execution attacks. The vulnerability's impact is amplified by the privileged nature of the Azure Site Recovery service, which typically operates with elevated permissions necessary for system-level operations and data management.
The operational impact of this vulnerability extends beyond simple unauthorized code execution, as it could enable attackers to compromise entire disaster recovery environments and potentially gain access to sensitive data repositories. Organizations using Azure Site Recovery for protecting critical business applications face the risk of complete system compromise, data exfiltration, and disruption of their disaster recovery capabilities. The vulnerability's remote exploitation capability means that attackers do not require physical access to the network or system, making it particularly dangerous in cloud environments where network boundaries are less defined. According to ATT&CK framework, this vulnerability aligns with T1059.001 for Command and Scripting Interpreter and T1078.004 for Valid Accounts, as attackers could leverage compromised service accounts to execute malicious code. The attack surface includes all systems that rely on Azure Site Recovery for replication, including virtual machines, storage accounts, and network configurations that depend on the service for recovery operations.
Mitigation strategies for this vulnerability require immediate patching of affected Azure Site Recovery service components and implementation of network-level controls to restrict access to the service. Organizations should implement the principle of least privilege by limiting access to Azure Site Recovery endpoints and monitoring for unusual API call patterns that might indicate exploitation attempts. Network segmentation and firewall rules should be configured to restrict communication between the Azure Site Recovery service and other systems to only necessary traffic. Microsoft has released security updates and patches specifically addressing this vulnerability, which should be deployed immediately across all affected environments. Additional defensive measures include implementing intrusion detection systems to monitor for anomalous behavior in the Azure Site Recovery service, regular security assessments of the service configuration, and maintaining detailed audit logs of all service interactions. Security teams should also consider implementing Azure Policy configurations to enforce secure service settings and ensure that all replication configurations follow security best practices. The vulnerability highlights the importance of continuous security monitoring and rapid response capabilities, as the complexity of cloud disaster recovery services increases the potential impact of such security flaws.