CVE-2020-9114 in FusionCompute
Summary
by MITRE • 12/01/2020
FusionCompute versions 6.3.0, 6.3.1, 6.5.0, 6.5.1 and 8.0.0 have a privilege escalation vulnerability. Due to improper privilege management, an attacker with common privilege may access some specific files and get the administrator privilege in the affected products. Successful exploit will cause privilege escalation.
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Analysis
by VulDB Data Team • 12/11/2020
The vulnerability identified as CVE-2020-9114 affects Huawei FusionCompute virtualization platforms across multiple versions including 6.3.0, 6.3.1, 6.5.0, 6.5.1, and 8.0.0. This represents a critical security flaw that undermines the fundamental security model of the platform by allowing unauthorized privilege escalation. The issue stems from inadequate privilege management controls within the system architecture, creating a pathway for malicious actors to elevate their access rights from standard user privileges to administrative level access. Such vulnerabilities are particularly dangerous in virtualized environments where the compromise of a single user account could potentially lead to complete system control and access to all virtual machines and underlying infrastructure resources.
The technical flaw manifests through improper privilege management mechanisms that fail to properly enforce access controls and authorization checks. When a user with common privileges attempts to access specific files or system components, the system does not adequately validate their permissions, allowing unauthorized access to administrative functions. This vulnerability operates at the core of the platform's security architecture, where the separation of privileges is compromised, enabling attackers to bypass normal access controls through carefully crafted requests or file access patterns. The flaw essentially creates a backdoor mechanism that allows privilege elevation without proper authentication or authorization verification, making it particularly insidious as it can be exploited through legitimate system interaction paths.
The operational impact of this privilege escalation vulnerability is severe and far-reaching within virtualized computing environments. An attacker who successfully exploits this vulnerability can gain complete administrative control over the FusionCompute platform, enabling them to manipulate virtual machine configurations, access sensitive data, modify system settings, and potentially compromise the entire virtual infrastructure. This escalation allows for persistent access to the system, making it possible for attackers to maintain control over the compromised environment long-term. The vulnerability affects not just individual virtual machines but the entire underlying hypervisor infrastructure, potentially leading to widespread data breaches, service disruptions, and complete system compromise. Organizations relying on FusionCompute for their virtualization needs face significant risk of unauthorized access to critical business data and infrastructure management functions.
Mitigation strategies for CVE-2020-9114 should prioritize immediate patching of affected systems with the vendor-provided security updates. Organizations must also implement comprehensive monitoring of system access logs and privilege usage patterns to detect potential exploitation attempts. Network segmentation and least-privilege access controls should be enforced to limit the potential impact of successful exploitation attempts. Security teams should conduct thorough vulnerability assessments to identify any systems that may have been compromised, and implement enhanced access control measures including multi-factor authentication and regular privilege reviews. This vulnerability aligns with CWE-284 (Improper Access Control) and represents a classic example of privilege escalation flaws that map to ATT&CK technique T1068 (Exploitation for Privilege Escalation). Organizations should also consider implementing automated security scanning tools that can detect similar privilege management issues across their IT infrastructure to prevent future incidents of this nature.