CVE-2014-9593 in CloudStack
Summary
by MITRE
Apache CloudStack before 4.3.2 and 4.4.x before 4.4.2 allows remote attackers to obtain private keys via a listSslCerts API call.
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Analysis
by VulDB Data Team • 04/02/2018
Apache CloudStack represents a comprehensive cloud infrastructure management platform that enables organizations to deploy and manage large-scale cloud computing environments. The vulnerability identified as CVE-2014-9593 affects versions prior to 4.3.2 and 4.4.x prior to 4.4.2, specifically targeting the listSslCerts API endpoint. This flaw resides within the platform's security architecture and represents a critical access control weakness that directly impacts the confidentiality of cryptographic materials. The vulnerability stems from insufficient input validation and authorization checks within the API implementation, allowing unauthorized remote actors to exploit the system through a specifically crafted listSslCerts request. This particular API call should have been restricted to authorized administrative users with appropriate privileges, yet the system failed to properly validate user credentials or enforce necessary access controls. The flaw aligns with CWE-284, which describes inadequate access control mechanisms, and specifically manifests as an improper authorization scenario where sensitive information is exposed to unauthorized parties. The technical implementation involves the API endpoint failing to verify that the requesting user possesses the necessary permissions to access SSL certificate information, creating a direct path for privilege escalation and data exfiltration. Attackers could leverage this vulnerability to obtain private keys that are critical components of SSL/TLS security infrastructure, potentially compromising the entire cloud environment's secure communications.
The operational impact of this vulnerability extends far beyond simple information disclosure, as private keys represent the foundation of cryptographic security within cloud deployments. When attackers successfully exploit this vulnerability, they gain access to private keys that can be used to impersonate legitimate services, decrypt sensitive communications, and potentially establish persistent backdoors within the cloud infrastructure. The exposure of private keys undermines the fundamental security assumptions of the cloud environment, as these credentials can be used to generate fraudulent certificates, bypass authentication mechanisms, and access protected resources. The vulnerability's remote nature eliminates the need for physical access or insider threats, making it particularly dangerous for organizations that rely on CloudStack for their infrastructure management. Security professionals should note that this vulnerability directly relates to the attack pattern described in the MITRE ATT&CK framework under T1566, which covers credential harvesting through API access. The exploitation process typically involves sending a malicious API request to the listSslCerts endpoint without proper authentication, resulting in the disclosure of private key material that can be immediately leveraged for further attacks.
Organizations utilizing affected CloudStack versions must implement immediate remediation measures to protect their infrastructure from potential exploitation. The primary mitigation involves upgrading to CloudStack versions 4.3.2 or 4.4.2, which contain the necessary patches to address the improper authorization checks within the listSslCerts API endpoint. Security administrators should also implement network segmentation and firewall rules to restrict access to API endpoints, particularly those handling sensitive cryptographic information. The implementation of additional authentication layers and API rate limiting can help reduce the attack surface and prevent automated exploitation attempts. Organizations should conduct comprehensive security assessments to identify any potential compromise of private keys and consider certificate revocation for any certificates that may have been exposed through this vulnerability. The remediation process should include monitoring for unauthorized API access attempts and implementing proper logging mechanisms to detect suspicious activities. Security teams must also review and strengthen their overall API security posture, ensuring that all endpoints properly validate user credentials and enforce appropriate access controls. This vulnerability serves as a critical reminder of the importance of proper authorization mechanisms and the potential consequences of inadequate access control implementation within cloud infrastructure management platforms.