CVE-2017-8123 in UMA
Summary
by MITRE
The UMA product with software V200R001 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-2017-8123 affects the UMA product running software version V200R001, representing a critical privilege escalation flaw that undermines the system's security posture. This vulnerability stems from inadequate parameter validation mechanisms within the product's processing logic, creating an exploitable condition that allows malicious actors to elevate their privileges. The UMA product, designed for unified management and administration purposes, becomes susceptible to unauthorized access when attackers manipulate specific packet structures to bypass legitimate authentication and authorization controls. This flaw exists at the core of the product's security architecture, where insufficient input sanitization and parameter validation create pathways for unauthorized privilege elevation. The vulnerability demonstrates a clear weakness in the product's defensive mechanisms, particularly in how it handles user-supplied data during authentication and authorization processes.
The technical exploitation of this vulnerability occurs through carefully crafted network packets that exploit the improper parameter handling within the UMA software. Attackers can manipulate input parameters to trigger unexpected behavior in the privilege management system, potentially allowing them to escalate from standard user privileges to administrative or root-level access. This type of vulnerability aligns with CWE-20, which describes improper input validation as a fundamental weakness that enables various attack vectors including privilege escalation, injection attacks, and arbitrary code execution. The flaw operates by bypassing the normal validation procedures that should occur during parameter processing, allowing malicious inputs to be interpreted as legitimate commands that trigger privilege elevation mechanisms. The vulnerability's impact is amplified by the fact that it requires minimal privileges to exploit, making it particularly dangerous in environments where attackers may initially gain access through less privileged accounts.
The operational impact of CVE-2017-8123 extends beyond simple privilege escalation, potentially enabling attackers to gain complete control over the affected UMA system. Once elevated privileges are obtained, attackers can modify system configurations, access sensitive data, install malicious software, or establish persistent backdoors within the network infrastructure. This vulnerability directly violates the principle of least privilege and can lead to significant security breaches when the UMA product is used in enterprise environments where it manages critical network resources and user access controls. The attack vector is particularly concerning because it can be executed remotely, requiring no physical access to the system and potentially allowing attackers to compromise the affected product from external networks. Organizations relying on this UMA product for network management and user authentication face substantial risk of unauthorized access and potential data breaches, especially when the product is deployed in environments with limited network segmentation.
Mitigation strategies for CVE-2017-8123 should prioritize immediate patch deployment from the vendor, as this vulnerability represents a known security flaw requiring urgent remediation. Organizations should implement network segmentation to limit access to UMA systems and deploy intrusion detection systems to monitor for suspicious packet patterns that may indicate exploitation attempts. The vulnerability's classification as a privilege escalation issue aligns with ATT&CK technique T1068, which covers local privilege escalation and remote code execution through system vulnerabilities. Security teams should conduct comprehensive vulnerability assessments to identify all instances of the affected UMA product and ensure proper access controls are implemented. Additionally, network monitoring should be enhanced to detect anomalous authentication patterns and parameter manipulation that could indicate exploitation attempts. Regular security audits and penetration testing should be conducted to verify that the implemented mitigations are effective and that no other similar vulnerabilities exist within the UMA product's codebase or related systems. The remediation process should include thorough testing of patches to ensure they do not introduce compatibility issues with existing network management workflows.