CVE-2015-4682 in RealPresence Resource Manager
Summary
by MITRE
Polycom RealPresence Resource Manager (aka RPRM) before 8.4 allows remote authenticated users to obtain the installation path via an HTTP POST request to PlcmRmWeb/JConfigManager.
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Analysis
by VulDB Data Team • 08/07/2024
The vulnerability CVE-2015-4682 affects Polycom RealPresence Resource Manager version 8.4 and earlier, representing a critical information disclosure flaw that enables remote authenticated attackers to discover sensitive installation paths. This vulnerability resides within the web-based management interface of the Polycom RPRM system, specifically in the PlcmRmWeb/JConfigManager component which handles configuration requests. The flaw stems from insufficient input validation and output sanitization in the web application's response handling mechanism, allowing malicious actors to extract system-level information through crafted HTTP POST requests. This type of vulnerability falls under CWE-200, Information Exposure, and demonstrates poor security by design principles in the application's architecture.
The technical exploitation of this vulnerability requires an attacker to first authenticate to the system with valid credentials, making it a privilege escalation vector rather than a purely remote attack. Once authenticated, the attacker can submit a specially crafted HTTP POST request to the PlcmRmWeb/JConfigManager endpoint, which then responds with the full installation path of the Polycom RPRM software. This information disclosure can reveal critical system architecture details including directory structures, file locations, and potentially sensitive configuration paths that could be leveraged in subsequent attacks. The vulnerability represents a classic case of insecure direct object reference where the application fails to properly validate or sanitize user-supplied input before using it in system calls or response generation.
The operational impact of this vulnerability extends beyond simple information disclosure, as the revealed installation paths can provide attackers with crucial intelligence for planning more sophisticated attacks. Knowledge of the exact installation directory structure can facilitate path traversal attacks, privilege escalation attempts, and help attackers identify potential weaknesses in the system's file permissions and access controls. Attackers could use this information to craft more targeted attacks against specific files or directories, potentially leading to full system compromise. The vulnerability also impacts the principle of least privilege as it allows authenticated users to access system information that should remain confidential. This issue aligns with ATT&CK technique T1083 (File and Directory Discovery) and represents a significant risk to enterprise communication infrastructure security.
Organizations running affected Polycom RPRM systems should immediately apply the vendor-provided security patch released in version 8.4, which addresses this vulnerability through proper input validation and output sanitization. Network segmentation and access control measures should be implemented to limit access to the RPRM management interface to only authorized personnel. Regular security assessments should include testing for similar information disclosure vulnerabilities in web applications, with particular attention to how configuration management endpoints handle user input. The vulnerability also highlights the importance of implementing proper logging and monitoring for unusual access patterns to management interfaces, as the exploitation of such flaws often occurs in the early stages of attack campaigns. System administrators should conduct comprehensive security reviews of all web-based management interfaces to identify and remediate similar issues that could potentially expose sensitive system information to unauthorized users.