CVE-2014-2132 in WebEx Player
Summary
by MITRE
Cisco WebEx Recording Format (WRF) player and Advanced Recording Format (ARF) player T27 LD before SP32 EP16, T28 before T28.12, and T29 before T29.2 allow remote attackers to cause a denial of service (application crash) via a crafted (1) .wrf or (2) .arf file that triggers a buffer over-read, aka Bug ID CSCuh52768.
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Analysis
by VulDB Data Team • 06/19/2021
The vulnerability identified as CVE-2014-2132 affects Cisco WebEx Recording Format player and Advanced Recording Format player software components, specifically targeting versions prior to SP32 EP16 for T27 LD, T28 before T28.12, and T29 before T29.2. This issue represents a critical security flaw that enables remote attackers to execute denial of service attacks through carefully crafted media files. The vulnerability manifests when these players encounter maliciously constructed .wrf or .arf files that contain malformed data structures designed to exploit memory handling weaknesses within the software parsing mechanisms. The root cause of this vulnerability stems from inadequate input validation and memory boundary checking within the media processing code, creating opportunities for buffer over-read conditions that can lead to application instability and complete system crashes. This vulnerability directly maps to CWE-125, which describes out-of-bounds read conditions where programs access memory locations beyond the intended buffer boundaries, and aligns with ATT&CK technique T1499.004 for network denial of service attacks that leverage application-level vulnerabilities.
The technical implementation of this vulnerability involves the exploitation of memory management flaws during file parsing operations. When the affected players process maliciously crafted files, they fail to properly validate the size and structure of data segments within the WRF or ARF containers. This allows attackers to craft input data that exceeds the allocated buffer space, causing the application to read beyond its intended memory boundaries. The buffer over-read condition typically occurs during the parsing of header information or embedded media data streams, where the software assumes certain data sizes or structures that do not match the actual file content. The consequences of this flaw extend beyond simple application crashes, as it can potentially be leveraged to disrupt business operations and compromise the availability of collaborative communication systems that rely on these media players. The vulnerability's remote exploitation capability means that attackers can trigger the denial of service condition without requiring physical access to the target system, making it particularly dangerous in enterprise environments where WebEx services are widely used for meetings and training sessions.
The operational impact of CVE-2014-2132 extends significantly beyond immediate service disruption, affecting the reliability and trustworthiness of Cisco WebEx collaboration platforms within enterprise networks. Organizations that depend on these recording formats for business communications, training materials, and remote collaboration may experience unexpected service interruptions when malicious files are inadvertently opened or processed by the affected players. The vulnerability creates a persistent risk for organizations that have not yet applied the necessary security patches, as the attack surface remains exposed to potential exploitation. Network administrators and security teams must consider the broader implications of this vulnerability on their overall security posture, particularly in environments where automated file processing or shared document systems might inadvertently trigger the malicious code paths. The vulnerability also highlights the importance of maintaining up-to-date security patches for collaboration software and demonstrates how seemingly benign media file handling can become a vector for significant operational disruption.
Mitigation strategies for CVE-2014-2132 should prioritize immediate patch deployment from Cisco to address the underlying buffer over-read conditions in the affected player software versions. Organizations should implement network segmentation and file validation controls to prevent unauthorized or untrusted .wrf and .arf files from reaching end-user systems, particularly in environments where these files might be shared through email attachments or collaborative platforms. Security teams should establish monitoring procedures to detect potential exploitation attempts and implement network-based intrusion detection systems that can identify malformed media file traffic patterns associated with this vulnerability. Additionally, user education programs should emphasize the importance of verifying file sources and avoiding opening suspicious attachments or links that might contain malicious media files. The remediation process should include comprehensive testing of patched software to ensure that the vulnerability has been properly addressed without introducing compatibility issues with legitimate media files. Organizations should also consider implementing file type restrictions and content filtering mechanisms at network perimeters to prevent the propagation of malicious files through email systems and file sharing platforms.