CVE-2017-8128 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-2017-8128 affects the UMA (Unified Management Architecture) product line, specifically versions V200R001 and V300R001, representing a critical privilege escalation flaw that undermines the security posture of affected systems. This vulnerability stems from inadequate input validation mechanisms within the software's parameter processing framework, creating a pathway for malicious actors to manipulate system access controls and elevate their privileges beyond normal operational boundaries. The flaw exists in the core authentication and authorization processing modules where user-supplied data fails to undergo proper sanitization or validation before being utilized in privilege-related operations. Such insufficient parameter validation creates a condition where crafted malicious inputs can bypass normal access controls and system restrictions, allowing unauthorized users to assume elevated roles within the system environment.
The technical implementation of this vulnerability manifests through improper parameter handling within the UMA product's communication protocols and administrative interfaces. Attackers can exploit this weakness by constructing specially formatted network packets or API requests that contain malformed or malicious parameter values designed to manipulate the system's privilege evaluation logic. These crafted inputs leverage the absence of robust input validation checks that should normally occur during parameter parsing, allowing the system to process potentially dangerous values without proper security screening. The vulnerability's exploitation typically involves sending packets with modified or extended parameter values that cause the system to misinterpret the user's privilege level or bypass access control checks entirely. This type of flaw aligns with CWE-20, which describes improper input validation, and represents a classic example of how inadequate parameter sanitization can lead to privilege escalation attacks.
The operational impact of CVE-2017-8128 extends beyond simple unauthorized access, as successful exploitation enables attackers to gain administrative or root-level privileges within the affected UMA systems. Once elevated privileges are obtained, attackers can perform a wide range of malicious activities including but not limited to modifying system configurations, accessing sensitive data repositories, creating or modifying user accounts, installing malicious software, and potentially establishing persistent backdoors within the network infrastructure. The vulnerability affects the fundamental security model of the UMA product, potentially compromising the integrity and confidentiality of all data processed through these systems. Organizations relying on these vulnerable versions face significant risk of data breaches, system compromise, and potential lateral movement within their network environments, as the elevated privileges gained through exploitation can be used to target other connected systems and resources.
Mitigation strategies for CVE-2017-8128 should prioritize immediate patch deployment from the vendor, as this represents a critical vulnerability requiring urgent attention. Organizations must implement comprehensive network monitoring to detect suspicious packet patterns and parameter manipulation attempts that could indicate exploitation attempts. The implementation of robust input validation controls and parameter sanitization mechanisms should be enforced at all system interfaces to prevent similar vulnerabilities from emerging in future deployments. Security teams should conduct thorough vulnerability assessments of all UMA product installations and implement network segmentation to limit the potential impact of successful exploitation attempts. Additionally, regular security audits and penetration testing should be performed to identify and remediate similar parameter validation weaknesses across the entire system infrastructure, aligning with ATT&CK framework techniques related to privilege escalation and command and control operations. Organizations should also consider implementing intrusion detection systems specifically configured to identify and alert on anomalous parameter processing patterns that could indicate exploitation of similar vulnerabilities.