CVE-2014-3395 in WebEx Meetings Server
Summary
by MITRE
Cisco WebEx Meetings Server (WMS) 2.5 allows remote attackers to trigger the download of arbitrary files via a crafted URL, aka Bug ID CSCup10343.
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Analysis
by VulDB Data Team • 07/05/2017
The vulnerability identified as CVE-2014-3395 affects Cisco WebEx Meetings Server version 2.5, representing a critical security flaw that enables remote attackers to execute unauthorized file downloads through manipulated web requests. This issue stems from inadequate input validation within the server's handling of web requests, creating a pathway for malicious actors to exploit the system's file retrieval mechanisms. The vulnerability specifically manifests when the server processes crafted URLs that contain malicious file paths or references, allowing attackers to access and download files that should otherwise remain restricted or protected.
The technical implementation of this vulnerability resides in the server's insufficient sanitization of user-supplied input parameters within the URL structure. When the WebEx Meetings Server processes incoming requests containing specially crafted file references, it fails to properly validate or filter the input before initiating file transfer operations. This weakness creates a directory traversal or file inclusion scenario where attackers can manipulate the system to access files outside of intended directories. The flaw operates at the application layer and can be exploited through web-based attack vectors, requiring no authentication or privileged access to initiate the malicious download process.
From an operational perspective, this vulnerability presents significant risk to organizations utilizing Cisco WebEx Meetings Server 2.5, as it allows attackers to potentially download sensitive configuration files, user data, system logs, or other confidential information stored on the server. The impact extends beyond simple unauthorized file access, as attackers could potentially retrieve system binaries, database files, or other critical components that might reveal system architecture or provide footholds for further exploitation. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the internet without requiring physical access to the network or system infrastructure.
Organizations should implement immediate mitigations including applying the latest security patches provided by Cisco, which address the input validation flaws in the WebEx Meetings Server. Network segmentation and access controls should be strengthened to limit exposure of the vulnerable server to untrusted networks. Additionally, implementing web application firewalls and content filtering solutions can help detect and block malicious URL patterns attempting to exploit this vulnerability. The mitigation strategies align with cybersecurity frameworks such as the CWE-22 principle of preventing directory traversal attacks and follow ATT&CK techniques related to initial access through web application exploitation. Regular security assessments and monitoring of web server logs for suspicious file access patterns should also be implemented to detect potential exploitation attempts and maintain ongoing security posture.