CVE-2015-4247 in WebEx Meeting Center
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the admin site component in Cisco WebEx Meeting Center allows remote attackers to inject arbitrary web script or HTML via an unspecified value, aka Bug ID CSCuv01971.
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Analysis
by VulDB Data Team • 06/03/2022
The CVE-2015-4247 vulnerability represents a critical cross-site scripting flaw discovered in Cisco WebEx Meeting Center's administrative interface. This vulnerability resides within the admin site component of the WebEx platform, making it a particularly concerning security issue given the privileged access that administrative interfaces typically provide. The vulnerability allows remote attackers to execute malicious scripts within the context of a victim's browser session, potentially leading to unauthorized access to sensitive administrative functions and data.
The technical nature of this vulnerability stems from insufficient input validation and output encoding within the WebEx Meeting Center administration interface. Attackers can exploit this weakness by injecting malicious script code through an unspecified value that is processed by the application without proper sanitization. This injection occurs within the administrative component, meaning that successful exploitation could grant attackers elevated privileges and access to the full administrative functionality of the WebEx Meeting Center platform. The vulnerability specifically affects the handling of user-supplied input that is then rendered back to users without appropriate HTML encoding or script sanitization measures.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to perform a wide range of malicious activities within the compromised environment. An attacker who successfully exploits this vulnerability could potentially steal administrative credentials, modify meeting configurations, access sensitive user data, or even take complete control of the WebEx Meeting Center administrative functions. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring physical access to the network or system. This vulnerability particularly affects organizations that rely heavily on WebEx for their meeting and collaboration needs, as it could compromise the security of entire corporate communication infrastructures.
Organizations affected by this vulnerability should implement immediate mitigations including applying the latest security patches provided by Cisco, implementing web application firewalls to filter malicious script content, and conducting thorough security assessments of their WebEx Meeting Center deployments. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and represents a clear violation of secure coding practices that should prevent untrusted data from being directly rendered in web pages without proper sanitization. From an attack perspective, this vulnerability maps to several ATT&CK techniques including initial access through web application attacks and privilege escalation via administrative interface compromise, making it a significant concern for organizations following the MITRE ATT&CK framework for threat analysis and defense planning.