CVE-2022-3596 in Undercloud
Summary
by MITRE • 09/20/2023
An information leak was found in OpenStack's undercloud. This flaw allows unauthenticated, remote attackers to inspect sensitive data after discovering the IP address of the undercloud, possibly leading to compromising private information, including administrator access credentials.
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Analysis
by VulDB Data Team • 10/14/2023
The vulnerability identified as CVE-2022-3596 represents a critical information disclosure flaw within OpenStack's undercloud deployment architecture. This security weakness stems from insufficient access controls and authentication mechanisms that govern how sensitive system data is exposed to external entities. The undercloud component serves as the management layer for OpenStack environments, orchestrating and controlling the underlying cloud infrastructure through centralized management interfaces. When this component fails to properly authenticate incoming requests, it creates a pathway for malicious actors to extract confidential information without requiring valid credentials or authorization.
The technical implementation of this vulnerability manifests through improper handling of network requests and data exposure mechanisms within the undercloud's API endpoints. Attackers can exploit this flaw by simply discovering the network address of the undercloud system and then issuing unauthenticated requests to specific endpoints that should normally require proper authentication. The flaw essentially creates a backdoor through which sensitive operational data becomes accessible, including administrative credentials, system configuration details, and potentially other confidential information that could be leveraged for further exploitation. This type of vulnerability typically falls under CWE-200, which specifically addresses information exposure vulnerabilities, and represents a classic case of insufficient authentication controls that violates fundamental security principles of access control and data protection.
The operational impact of CVE-2022-3596 extends beyond simple data leakage to encompass significant risk to overall cloud infrastructure security. Once an attacker gains access to administrator credentials through this information leak, they can assume full control over the undercloud management system and subsequently compromise the entire OpenStack deployment. This access could enable attackers to modify system configurations, create new user accounts, deploy malicious workloads, or manipulate network settings that could disrupt services or create persistent backdoors within the cloud environment. The remote and unauthenticated nature of this vulnerability means that attackers do not require physical access or prior compromise of the system to exploit the flaw, making it particularly dangerous for cloud environments where external network access may be limited but not completely restricted.
Security practitioners should consider this vulnerability in the context of the ATT&CK framework, specifically under the information gathering and credential access phases where adversaries attempt to discover system information and extract authentication credentials. The vulnerability aligns with techniques such as network sniffing, service enumeration, and credential dumping that attackers commonly employ to gain initial access to cloud environments. Organizations should implement immediate mitigations including network segmentation to isolate undercloud components from untrusted networks, enforcing strict access controls on all API endpoints, and implementing comprehensive monitoring of access patterns to detect anomalous behavior. Additional protective measures include regular security assessments of cloud infrastructure components, proper configuration management, and ensuring that all network services are properly secured with authentication mechanisms that prevent unauthorized access to sensitive data. The vulnerability also underscores the importance of following security best practices for cloud deployments, including the principle of least privilege and defense in depth strategies that protect critical system components from unauthorized access.