CVE-2020-1817 in PCManager
Summary
by MITRE
Huawei PCManager with versions earlier than 10.0.1.36 has a privilege escalation vulnerability. Due to improper permission management of specific files, local attackers with low permissions can inject commands to exploit this vulnerability. Successful exploit may cause privilege escalation.
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Analysis
by VulDB Data Team • 06/04/2024
The vulnerability identified as CVE-2020-1817 affects Huawei PCManager software versions prior to 10.0.1.36 and represents a critical privilege escalation flaw that undermines the security model of the affected system. This vulnerability resides within the permission management mechanisms of specific files within the PCManager application, creating an exploitable condition that allows local attackers to elevate their privileges from standard user level to administrative or system level access. The flaw demonstrates a fundamental weakness in the application's security architecture where proper access controls have not been adequately implemented to prevent unauthorized privilege elevation.
The technical exploitation of this vulnerability occurs through command injection techniques targeting improperly protected files within the PCManager application. Attackers with minimal system privileges can manipulate these vulnerable files to execute arbitrary commands with elevated privileges, effectively bypassing the normal security boundaries that should separate user-level processes from system-level operations. This type of vulnerability falls under the CWE-78 category of Command Injection, where the application fails to properly sanitize user inputs before executing system commands. The underlying issue stems from inadequate input validation and improper file permission handling that allows unauthorized code execution within the context of higher-privileged processes.
The operational impact of CVE-2020-1817 extends beyond simple privilege escalation to encompass potential full system compromise and persistent access. Once successfully exploited, attackers can gain administrative control over the affected system, enabling them to install malicious software, modify system configurations, access sensitive data, and establish backdoors for continued unauthorized access. This vulnerability particularly affects enterprise environments where Huawei PCManager is deployed, as it could allow attackers to move laterally within networks or establish persistent footholds for more extensive attacks. The vulnerability aligns with ATT&CK technique T1068 which describes the use of local privilege escalation to gain elevated system access, making it a significant concern for security operations teams managing Huawei device ecosystems.
Mitigation strategies for this vulnerability require immediate software updates to version 10.0.1.36 or later, which contain the necessary patches to address the permission management flaws. System administrators should conduct comprehensive vulnerability assessments to identify all instances of affected software and implement mandatory update policies to ensure complete remediation across all endpoints. Additional protective measures include implementing strict file permission controls, monitoring for unauthorized file modifications, and conducting regular security audits of system components. The vulnerability highlights the importance of proper privilege separation and input validation in security-critical applications, serving as a reminder that even seemingly minor permission management flaws can result in severe security consequences. Organizations should also consider implementing network segmentation and access controls to limit the potential impact of successful exploitation attempts, while maintaining continuous monitoring for signs of unauthorized privilege escalation activities.