CVE-2014-3340 in Webex MeetMeNow Server
Summary
by MITRE
Directory traversal vulnerability in an unspecified PHP script in the server in Cisco WebEx MeetMeNow allows remote authenticated users to read arbitrary files via a crafted request, aka Bug ID CSCuo16166.
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Analysis
by VulDB Data Team • 08/20/2014
The vulnerability described in CVE-2014-3340 represents a directory traversal flaw that specifically affects Cisco WebEx MeetMeNow server components. This security weakness exists within an unspecified PHP script that processes user requests, creating an opportunity for malicious actors to access sensitive system files. The vulnerability is particularly concerning because it requires only authenticated access to exploit, meaning that an attacker who has obtained valid credentials can leverage this flaw to gain unauthorized access to arbitrary files on the affected system. The issue stems from inadequate input validation and sanitization within the server-side processing logic that handles file operations.
The technical implementation of this directory traversal vulnerability allows authenticated users to manipulate file path parameters in their requests to access files outside the intended directory structure. Attackers can craft specially formatted requests that exploit the lack of proper path validation, enabling them to navigate through the file system hierarchy and retrieve confidential data such as configuration files, user credentials, application source code, or other sensitive information stored on the server. This type of vulnerability is classified under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw demonstrates a fundamental failure in input validation and access control mechanisms within the PHP application layer.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can lead to complete system compromise when combined with other attack vectors. An authenticated attacker can potentially access database configuration files containing administrative credentials, application source code that may reveal additional vulnerabilities, or system files that could provide insights into the underlying infrastructure. This access could facilitate further attacks such as privilege escalation, lateral movement within the network, or even complete system takeover depending on the permissions of the compromised account. The vulnerability also poses significant risks to organizational security posture as it could expose sensitive business data, intellectual property, or customer information stored on the WebEx server. According to ATT&CK framework, this vulnerability maps to T1083 (File and Directory Discovery) and T1566 (Phishing for Information) as attackers may use this access to gather intelligence for more sophisticated attacks.
Mitigation strategies for CVE-2014-3340 should focus on implementing robust input validation and sanitization mechanisms within the affected PHP scripts. Organizations should ensure that all user-supplied input is properly validated and that file path operations are restricted to predefined directories through the use of allowlists rather than denylists. The implementation of proper access controls and privilege separation can significantly reduce the impact of such vulnerabilities. Cisco has issued patches and updates to address this specific vulnerability, and system administrators should immediately apply these security updates to protect their environments. Additionally, network segmentation and monitoring solutions should be deployed to detect anomalous file access patterns that might indicate exploitation attempts. Regular security assessments and code reviews focusing on input validation practices can help identify and remediate similar vulnerabilities in other applications within the organization's infrastructure.