CVE-2022-33656 in Azure Site Recovery VMWare to Azure
Summary
by MITRE • 07/13/2022
Azure Site Recovery Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-30181, CVE-2022-33641, CVE-2022-33642, CVE-2022-33643, CVE-2022-33650, CVE-2022-33651, CVE-2022-33652, CVE-2022-33653, CVE-2022-33654, CVE-2022-33655, CVE-2022-33657, CVE-2022-33658, CVE-2022-33659, CVE-2022-33660, CVE-2022-33661, CVE-2022-33662, CVE-2022-33663, CVE-2022-33664, CVE-2022-33665, CVE-2022-33666, CVE-2022-33667, CVE-2022-33668, CVE-2022-33669, CVE-2022-33671, CVE-2022-33672, CVE-2022-33673, CVE-2022-33674, CVE-2022-33675, CVE-2022-33677.
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Analysis
by VulDB Data Team • 07/22/2022
The Azure Site Recovery service presents a critical elevation of privilege vulnerability that allows authenticated attackers to escalate their privileges within the Azure environment. This vulnerability specifically affects the recovery services vaults and their associated replication mechanisms, creating a pathway for malicious actors to gain unauthorized access to sensitive data and system resources. The flaw exists in the permission validation and access control mechanisms implemented within the Azure Site Recovery component, which fails to properly enforce security boundaries during certain operational scenarios. This vulnerability is particularly concerning as it operates within the cloud infrastructure management layer, where successful exploitation could lead to comprehensive compromise of backup and disaster recovery systems.
The technical implementation of this vulnerability stems from improper validation of user permissions and access tokens during replication and failover operations within Azure Site Recovery. Attackers can leverage this weakness to manipulate authentication flows and gain elevated privileges that should normally be restricted to administrators or authorized personnel. The flaw manifests when the system processes certain API calls related to recovery services vault management, where insufficient input validation allows attackers to inject malicious parameters that bypass standard access controls. This behavior aligns with common security weaknesses categorized under CWE-284, which deals with improper access control mechanisms, and represents a classic privilege escalation vector that has been documented in similar cloud service implementations. The vulnerability's exploitation requires an authenticated session but does not necessitate administrative credentials initially, making it particularly dangerous in environments where user access is more broadly distributed.
Operational impact assessment reveals that successful exploitation of CVE-2022-33656 could result in comprehensive compromise of Azure Site Recovery functionality and associated data. Attackers could potentially access backup data, modify replication settings, or even gain access to underlying storage accounts that contain sensitive information. The vulnerability affects organizations that rely on Azure Site Recovery for disaster recovery and business continuity planning, potentially exposing critical backup infrastructure to unauthorized access. This compromise could lead to data loss, system downtime, and regulatory compliance violations, particularly in industries with strict data protection requirements such as healthcare, financial services, and government agencies. The impact extends beyond immediate data access as attackers could use the elevated privileges to pivot to other systems within the Azure tenant, creating a broader attack surface and potentially enabling lateral movement throughout the cloud infrastructure.
Microsoft has addressed this vulnerability through security updates released as part of their regular patching cycle, emphasizing the importance of timely deployment for organizations utilizing Azure Site Recovery services. The mitigation strategy involves applying the latest security patches and updates to all Azure Site Recovery components, including the recovery services vaults and associated replication agents. Organizations should implement comprehensive monitoring of Azure activity logs to detect anomalous access patterns that might indicate exploitation attempts, particularly focusing on unusual API calls related to vault management and replication operations. Security teams should also review and enforce least privilege principles for all Azure Site Recovery configurations, ensuring that only necessary personnel have access to critical recovery services. This vulnerability demonstrates the ongoing challenges in cloud security management and highlights the need for continuous security assessments of cloud-based disaster recovery solutions. The ATT&CK framework categorizes this type of vulnerability under privilege escalation techniques, specifically targeting cloud service management interfaces and reinforcing the importance of securing cloud infrastructure access controls. Organizations should conduct regular security audits of their Azure environments to identify and remediate similar vulnerabilities that could provide attackers with unauthorized access to critical infrastructure components.