CVE-2017-8120 in UMA
Summary
by MITRE
The UMA product with software V200R001 and V300R001 has a privilege elevation vulnerability due to insufficient validation or improper processing of parameters. An attacker could craft specific packets to exploit these vulnerabilities to gain elevated privileges.
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Analysis
by VulDB Data Team • 01/11/2023
The vulnerability identified as CVE-2017-8120 affects the UMA (Unified Management Architecture) product across software versions V200R001 and V300R001, representing a critical privilege escalation flaw that undermines the security posture of network management systems. This vulnerability stems from inadequate parameter validation mechanisms within the UMA software implementation, creating a pathway for malicious actors to manipulate system access controls and elevate their privileges beyond normal operational limits.
The technical flaw manifests through insufficient input validation and improper parameter processing within the UMA product's authentication and authorization frameworks. Attackers can exploit this weakness by crafting specially designed network packets that leverage the flawed parameter handling to bypass normal access controls. The vulnerability specifically targets the privilege escalation mechanism, allowing an attacker with network access to potentially gain administrative or root-level privileges on the affected system. This type of vulnerability falls under CWE-20, which encompasses improper input validation, and represents a classic example of how inadequate parameter sanitization can lead to severe security consequences.
The operational impact of CVE-2017-8120 extends beyond simple unauthorized access, as successful exploitation could enable attackers to gain complete control over the UMA management system. This includes the ability to modify system configurations, access sensitive management data, manipulate network policies, and potentially use the compromised system as a pivot point for further attacks within the network infrastructure. The vulnerability's exploitation requires network connectivity to the affected UMA system, making it particularly concerning for organizations with exposed management interfaces or those that do not properly segment their network management traffic.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation,' and demonstrates how attackers can leverage software flaws to gain elevated system access. The attack vector typically involves network-based packet crafting, making it relevant to ATT&CK technique T1071.3, which covers application layer protocol usage for command and control communications. Organizations implementing UMA systems should consider this vulnerability as part of their broader security posture assessment, particularly when evaluating their network management infrastructure's exposure to external threats.
Mitigation strategies for CVE-2017-8120 should include immediate deployment of vendor-provided patches and firmware updates that address the parameter validation flaws. Network segmentation practices should be implemented to limit access to UMA management interfaces, while strict firewall rules should be configured to restrict network access to only authorized administrative workstations. Regular security assessments and vulnerability scanning should be conducted to identify similar parameter validation issues in other network management systems. Additionally, organizations should implement network monitoring solutions capable of detecting anomalous packet patterns that might indicate exploitation attempts against such vulnerabilities. The remediation process should also include thorough testing of patches in controlled environments before production deployment to ensure system stability and functionality.