CVE-2014-3296 in WebEx Meetings Server
Summary
by MITRE
The XML programmatic interface (XML PI) in Cisco WebEx Meeting Server 1.5(.1.131) and earlier allows remote authenticated users to obtain sensitive meeting information via a crafted URL, aka Bug ID CSCum03527.
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Analysis
by VulDB Data Team • 07/21/2021
The vulnerability identified as CVE-2014-3296 represents a critical information disclosure flaw within Cisco WebEx Meeting Server's XML Programmatic Interface component. This security weakness affects version 1.5 and earlier releases, specifically exposing sensitive meeting data to authenticated remote attackers who can craft malicious URLs to exploit the vulnerability. The issue stems from inadequate input validation and access control mechanisms within the XML PI functionality, which processes programmatic requests for meeting information and resources. The vulnerability is particularly concerning because it requires only authentication to exploit, meaning that any user with valid credentials can potentially access confidential meeting details without proper authorization controls.
The technical implementation of this flaw involves the XML PI component failing to properly validate and sanitize user-supplied URL parameters that contain meeting identifiers or session tokens. When authenticated users submit crafted URLs containing malformed or specially constructed parameters, the system processes these inputs without sufficient validation, leading to unauthorized information disclosure. This vulnerability falls under CWE-20, which categorizes improper input validation as a fundamental weakness in software design. The XML PI interface appears to lack proper access control checks that would normally validate whether an authenticated user has legitimate authorization to access specific meeting data, creating a path for privilege escalation through information disclosure.
The operational impact of CVE-2014-3296 extends beyond simple data exposure, as the sensitive meeting information that can be accessed includes participant details, meeting schedules, and potentially confidential business communications. This vulnerability directly impacts the confidentiality aspect of the CIA triad, as it allows unauthorized access to meeting-related data that organizations typically consider sensitive. Attackers could leverage this vulnerability to gather intelligence about upcoming meetings, identify key participants, or access proprietary information shared during meetings. The implications are particularly severe for enterprises that rely heavily on WebEx for business-critical communications and collaboration, as this vulnerability could enable competitive intelligence gathering or facilitate social engineering attacks against authenticated users.
Organizations should implement immediate mitigations including applying the latest security patches from Cisco, which would address the underlying input validation issues in the XML PI interface. Network segmentation and access controls should be strengthened to limit exposure of the WebEx Meeting Server to only trusted administrative networks. Additionally, monitoring for unusual URL patterns or access attempts to the XML PI interface should be implemented as part of security operations. The vulnerability aligns with ATT&CK technique T1071.004, which covers application layer protocol: web protocols, as it exploits weaknesses in web-based interfaces. Organizations should also consider implementing automated vulnerability scanning tools to detect similar input validation issues in other web applications and ensure proper access control mechanisms are in place throughout their infrastructure. Regular security assessments and code reviews focusing on input validation and access control implementations will help prevent similar vulnerabilities from being introduced in future versions of the software.