CVE-2014-3310 in WebEx Meetings Server
Summary
by MITRE
The File Transfer feature in WebEx Meetings Client in Cisco WebEx Meetings Server and WebEx Meeting Center does not verify that a requested file was an offered file, which allows remote attackers to read arbitrary files via a modified request, aka Bug IDs CSCup62442 and CSCup58463.
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Analysis
by VulDB Data Team • 02/08/2022
The vulnerability identified as CVE-2014-3310 represents a critical access control flaw within Cisco WebEx Meetings Client software that affects both WebEx Meetings Server and WebEx Meeting Center deployments. This weakness stems from insufficient input validation mechanisms within the file transfer functionality, creating a pathway for malicious actors to bypass legitimate file sharing protocols. The vulnerability specifically targets the authentication and authorization processes that should validate file requests before execution, leaving systems exposed to unauthorized data access through crafted malicious requests.
The technical exploitation of this vulnerability occurs through a lack of proper file verification mechanisms within the WebEx client's file transfer implementation. Attackers can manipulate requests to access files that were not originally offered for transfer, effectively circumventing the intended security boundaries. This flaw operates at the application layer and leverages the absence of proper file path validation, allowing attackers to specify arbitrary file paths that the system will attempt to access and transfer. The vulnerability is classified under CWE-22, which addresses Improper Limitation of a Pathname to a Restricted Directory, commonly known as Path Traversal or Directory Traversal attacks.
The operational impact of CVE-2014-3310 extends beyond simple unauthorized file access, potentially enabling attackers to extract sensitive corporate data, configuration files, or system information that could facilitate further compromise. This vulnerability affects organizations using Cisco WebEx services for business meetings and collaboration, where the attack surface includes not only the meeting participants but also the underlying infrastructure hosting the WebEx services. The implications are particularly severe in enterprise environments where WebEx is used for internal communications and sensitive business discussions.
Security professionals should implement immediate mitigations including applying Cisco's official security patches and updates, restricting network access to WebEx services through firewall rules, and monitoring for anomalous file transfer activities. Organizations should also consider network segmentation to limit access to WebEx services and implement additional logging mechanisms to detect potential exploitation attempts. The vulnerability demonstrates the importance of proper input validation and access control mechanisms as outlined in the MITRE ATT&CK framework under the T1059 technique for command and scripting interpreter, where attackers exploit system vulnerabilities to gain unauthorized access to resources. Additionally, this vulnerability aligns with the principle of least privilege enforcement and proper resource access controls that are fundamental to secure application design and align with NIST cybersecurity framework guidelines for protecting information systems.