CVE-2020-9072 in OSD
Summary
by MITRE
Huawei OSD product with versions earlier than OSD_uwp_9.0.32.0 have a local privilege escalation vulnerability. An authenticated, local attacker can constructs a specific file path to exploit this vulnerability. Successful exploitation may cause the attacker to obtain a higher privilege.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/03/2024
The vulnerability identified as CVE-2020-9072 affects Huawei OSD products running versions prior to OSD_uwp_9.0.32.0, representing a critical local privilege escalation flaw that undermines the security posture of these systems. This vulnerability resides within the operating system's privilege management mechanisms and specifically targets the way the system handles file path construction and validation. The flaw allows an authenticated local attacker to manipulate file path parameters in a manner that bypasses normal access controls and privilege boundaries.
The technical implementation of this vulnerability stems from inadequate input validation and path resolution mechanisms within the Huawei OSD product. When an authenticated user attempts to construct specific file paths, the system fails to properly sanitize or validate the constructed paths, enabling the attacker to craft malicious path sequences that can escalate privileges. This type of vulnerability aligns with CWE-78 and CWE-22, which respectively address improper neutralization of special elements used in OS commands and improper limitation of a pathname to a restricted directory. The vulnerability operates at the kernel or system level where file access controls and privilege checks should prevent unauthorized elevation of privileges.
The operational impact of this vulnerability is significant as it provides a local attacker who already has authentication credentials the means to gain elevated privileges without requiring additional attack vectors or exploitation techniques. Once successfully exploited, the attacker can execute arbitrary code with higher privileges, potentially gaining access to sensitive system resources, modifying critical system files, or establishing persistent access to the compromised system. This vulnerability directly impacts the principle of least privilege and can lead to complete system compromise when combined with other attack vectors.
Mitigation strategies for CVE-2020-9072 should prioritize immediate deployment of the vendor-provided security patch or update to version OSD_uwp_9.0.32.0 and later. System administrators should also implement additional security controls including regular vulnerability assessments, monitoring for suspicious file path constructions, and enforcing strict access controls and privilege management policies. The vulnerability demonstrates the importance of proper input validation and path resolution mechanisms as outlined in the MITRE ATT&CK framework under the privilege escalation technique. Organizations should conduct thorough security assessments of their Huawei OSD deployments and ensure proper patch management procedures are in place to prevent exploitation of similar vulnerabilities. The affected systems should also undergo security hardening measures to minimize the attack surface and limit the potential impact of such privilege escalation vulnerabilities.