CVE-2016-1484 in WebEx Meetings Server
Summary
by MITRE
Cisco WebEx Meetings Server 2.6 allows remote attackers to bypass intended access restrictions and obtain sensitive application information via unspecified vectors, aka Bug ID CSCuy92724.
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Analysis
by VulDB Data Team • 03/31/2019
The vulnerability identified as CVE-2016-1484 represents a critical access control flaw within Cisco WebEx Meetings Server version 2.6 that enables remote attackers to circumvent intended security measures and gain unauthorized access to sensitive application information. This vulnerability resides within the server's authentication and authorization mechanisms, potentially allowing malicious actors to escalate their privileges and access confidential data without proper credentials or permissions. The unspecified vectors suggest that the flaw may manifest through multiple attack pathways, making it particularly concerning for organizations relying on this communication platform for business-critical meetings and collaborative sessions.
This vulnerability falls under the broader category of insufficient access control as defined by CWE-284, where the system fails to properly enforce access restrictions that should protect sensitive resources. The flaw specifically impacts the server's ability to maintain proper isolation between different user roles and sessions, creating potential pathways for information disclosure that could expose meeting data, participant information, or administrative configurations. The vulnerability's classification as a remote attack vector means that threat actors can exploit this weakness from outside the organization's network perimeter without requiring physical access or local system credentials.
The operational impact of CVE-2016-1484 extends beyond simple information disclosure, potentially enabling attackers to conduct reconnaissance activities that could lead to more sophisticated attacks within the network. Organizations using Cisco WebEx Meetings Server may experience unauthorized access to meeting recordings, participant lists, and other sensitive communication data that could be leveraged for social engineering attacks or competitive intelligence gathering. The vulnerability's presence in a widely deployed collaboration platform increases the attack surface for organizations, particularly those in regulated industries where meeting confidentiality is paramount for compliance with standards such as SOC 2, HIPAA, or PCI DSS requirements.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected Cisco WebEx Meetings Server installations with the vendor-provided security updates. Organizations should also implement network segmentation to limit access to the WebEx server infrastructure and monitor for unusual access patterns or unauthorized data retrieval attempts. Security teams should conduct comprehensive vulnerability assessments to identify any additional systems that may be impacted by similar access control weaknesses and ensure that proper network access controls are implemented to prevent lateral movement if exploitation occurs. The vulnerability's nature aligns with techniques described in the ATT&CK framework under the privilege escalation and defense evasion tactics, emphasizing the need for layered security controls and continuous monitoring of access logs for suspicious activities that could indicate exploitation attempts.