CVE-2015-4132 in ClearPass Policy Manager
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Aruba Networks ClearPass Policy Manager (CPPM) before 6.4.5 allow remote administrators to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 04/01/2019
The CVE-2015-4132 vulnerability represents a critical security flaw in Aruba Networks ClearPass Policy Manager version 6.4.4 and earlier, where multiple cross-site scripting vulnerabilities exist that enable remote administrators to execute arbitrary web scripts or HTML code. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a common web application security weakness that occurs when an application incorporates untrusted data into web pages without proper validation or encoding. The ClearPass Policy Manager serves as a network access control solution that manages authentication, authorization, and accounting for network devices, making it a critical component in enterprise security infrastructures. The vulnerability's impact is amplified by the fact that it allows remote administrators to inject malicious code, potentially compromising the entire network access control system. The unspecified vectors suggest that the vulnerability could be exploited through various input points within the web interface, including but not limited to user input fields, URL parameters, or form submissions. This weakness creates an attack surface that could be leveraged by malicious actors to perform session hijacking, steal sensitive credentials, or redirect users to malicious websites.
The technical exploitation of this vulnerability requires an attacker to have administrative privileges within the ClearPass Policy Manager environment, which significantly reduces the attack surface compared to vulnerabilities requiring user interaction. However, the implications remain severe as administrators typically possess elevated privileges and access to sensitive network information. The XSS flaw enables attackers to inject malicious scripts that can execute in the context of other users' browsers, potentially allowing for privilege escalation, data exfiltration, or complete system compromise. The vulnerability's presence in the web interface components of the policy manager means that any administrative user could be targeted, and the attack could persist across multiple sessions or user interactions. The exploitation process would likely involve crafting malicious payloads that bypass input validation mechanisms and are then executed when other administrators view affected pages or interact with the system. This type of vulnerability is particularly dangerous in enterprise environments where the policy manager controls access to critical network resources and maintains sensitive authentication data.
The operational impact of CVE-2015-4132 extends beyond simple code injection, as it represents a fundamental breach in the security model of the ClearPass Policy Manager system. Organizations relying on this platform for network access control could face significant risks including unauthorized access to network resources, credential theft, and potential lateral movement within the network infrastructure. The vulnerability undermines the integrity of the administrative interface and could be used to establish persistent backdoors or to manipulate access control policies. Attackers could exploit this weakness to modify user accounts, change authentication settings, or redirect traffic through malicious proxies. The long-term consequences include potential data breaches, compliance violations, and loss of trust in the organization's security infrastructure. Organizations may experience disruption to network services if attackers manipulate access control policies or disable critical authentication mechanisms, leading to widespread service outages and security incidents that require extensive forensic analysis and system restoration.
Mitigation strategies for CVE-2015-4132 should focus on immediate patching of the ClearPass Policy Manager to version 6.4.5 or later, which addresses the identified XSS vulnerabilities. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent similar issues in custom applications or third-party integrations. Network segmentation and privileged access controls should be enforced to limit the potential impact of administrative account compromise. Regular security assessments and penetration testing should be conducted to identify and remediate similar vulnerabilities in other network management systems. The implementation of web application firewalls and security monitoring solutions can provide additional layers of protection against XSS attacks. Organizations should also establish robust incident response procedures that include immediate containment, forensic analysis, and system restoration capabilities. Security awareness training for administrators should emphasize the importance of maintaining secure administrative practices and recognizing potential signs of compromise. The vulnerability highlights the importance of adhering to secure coding practices and implementing defense-in-depth strategies that protect against multiple attack vectors and reduce the overall attack surface of critical network infrastructure components.