CVE-2022-0207 in vdsm
Summary
by MITRE • 08/26/2022
A race condition was found in vdsm. Functionality to obfuscate sensitive values in log files that may lead to values being stored in clear text.
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Analysis
by VulDB Data Team • 10/02/2022
The vulnerability identified as CVE-2022-0207 resides within the Virtual Desktop and Server Management (vdsm) component, which serves as a critical infrastructure element in virtualization environments. This race condition represents a significant security flaw that directly impacts how sensitive data is handled within log files, potentially exposing confidential information to unauthorized parties. The issue manifests when the system attempts to obfuscate sensitive values during logging operations, creating a window where data may be inadvertently stored in plaintext format rather than being properly masked or encrypted. This flaw specifically affects the logging mechanism's ability to maintain data confidentiality during concurrent operations, where timing dependencies between different processes can result in inconsistent security controls.
The technical implementation of this race condition stems from improper synchronization mechanisms within the vdsm logging subsystem. When multiple threads or processes attempt to access and modify log entries simultaneously, the obfuscation process fails to properly secure sensitive data fields. This creates a scenario where sensitive information such as passwords, API keys, or cryptographic tokens may be written to log files in their original clear text format. The vulnerability can be exploited through normal operational conditions where logging occurs concurrently with other system activities, making it particularly dangerous in production environments where logging is continuous and extensive. The race condition typically occurs during the transition period between when sensitive data is initially captured and when the obfuscation routine is executed, allowing for data leakage during this temporal window.
The operational impact of CVE-2022-0207 extends beyond simple data exposure, as it fundamentally undermines the security posture of virtualized environments that rely on vdsm for management operations. Attackers who gain access to log files can extract sensitive credentials and authentication tokens that would otherwise be protected through proper obfuscation techniques, potentially leading to unauthorized access to virtual machines, storage systems, and underlying infrastructure. This vulnerability directly violates security principles related to data confidentiality and access control, as defined in the CWE-362 category for race conditions and CWE-312 for exposure of sensitive information. The impact is particularly severe in multi-tenant environments where log files may contain information belonging to different organizations, creating potential cross-contamination of sensitive data. Additionally, the vulnerability can be leveraged to escalate privileges or gain deeper access to the virtualization platform, as authentication tokens and session information may be exposed through this logging mechanism.
Mitigation strategies for CVE-2022-0207 require immediate implementation of proper synchronization mechanisms within the vdsm logging subsystem to ensure that sensitive data obfuscation occurs atomically and consistently. Organizations should implement robust logging policies that minimize the amount of sensitive data written to logs, while also ensuring that all concurrent access to logging resources is properly protected through mutex locks or similar synchronization primitives. The implementation should follow ATT&CK technique T1562.001 for privilege escalation through logging and monitoring, ensuring that log file access controls are properly configured to prevent unauthorized access. System administrators should also consider implementing log file encryption at rest and establishing regular audit procedures to detect potential data exposure incidents. The vulnerability highlights the importance of proper thread safety in security-critical components and emphasizes the need for comprehensive testing of concurrent operations in virtualization management systems. Organizations must also review their overall logging strategy to ensure that sensitive information is not inadvertently exposed through any logging mechanism, particularly in environments where multiple concurrent processes interact with shared resources.