CVE-2018-7746 in Bridge Cobub Razor
Summary
by MITRE
An issue was discovered in Western Bridge Cobub Razor 0.7.2. Authentication is not required for /index.php?/manage/channel/modifychannel. For example, with a crafted channel name, stored XSS is triggered during a later /index.php?/manage/channel request by an admin.
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Analysis
by VulDB Data Team • 06/18/2024
The vulnerability identified as CVE-2018-7746 resides within the Western Bridge Cobub Razor analytics platform version 0.7.2, representing a critical authentication bypass flaw that undermines the system's security posture. This issue manifests through an unprotected endpoint at /index.php?/manage/channel/modifychannel which lacks proper access controls, allowing unauthorized users to manipulate channel configurations without authentication. The flaw directly violates fundamental security principles of least privilege and access control enforcement, creating a pathway for malicious actors to escalate their privileges within the system. The vulnerability is particularly concerning as it operates within the administrative management interface, providing attackers with potential access to sensitive system functions and data.
The technical implementation of this vulnerability stems from inadequate input validation and authentication mechanisms within the channel modification functionality. When an attacker crafts a malicious channel name and submits it through the unprotected endpoint, the system fails to verify the user's authorization status before processing the request. This design flaw creates a persistent cross-site scripting vector where the malicious input is stored within the application's database and subsequently executed during subsequent channel requests. The stored XSS vulnerability operates under CWE-079 - Cross-site Scripting, specifically manifesting as a server-side storage vulnerability that allows attackers to inject malicious scripts into the application's data storage. The vulnerability is classified under ATT&CK technique T1213.002 - Data from Information Repositories, as it enables unauthorized data manipulation and script execution within the system's administrative interface.
The operational impact of this vulnerability extends beyond simple XSS exploitation, as it provides attackers with a persistent foothold within the analytics platform. Once an attacker successfully exploits this vulnerability, they can execute arbitrary JavaScript code within the context of the admin's browser session, potentially leading to complete system compromise. The stored nature of the XSS vulnerability means that the malicious payload remains active even after the initial exploitation, continuously affecting any admin user who accesses the affected channel management interface. This creates a sustained threat vector that can be leveraged for session hijacking, credential theft, or further privilege escalation attacks. The vulnerability affects the platform's integrity and confidentiality, as it allows unauthorized modification of channel configurations and potential data exfiltration through the execution of malicious scripts. The impact is particularly severe in environments where the analytics platform manages sensitive user data or serves as a central hub for business intelligence operations.
Mitigation strategies for this vulnerability must address both the immediate authentication bypass issue and the resulting XSS exposure. Organizations should implement mandatory authentication checks for all administrative endpoints, ensuring that proper session management and access control mechanisms are enforced before any administrative operations are permitted. The application should validate all input parameters through comprehensive sanitization and validation routines to prevent malicious code injection attempts. Additionally, implementing proper input escaping and output encoding mechanisms will help prevent XSS exploitation even if input validation is bypassed. Security patches should be applied immediately to upgrade to versions that address this vulnerability, as the flaw exists in the specific version 0.7.2 of the Cobub Razor platform. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though they should not be relied upon as the sole mitigation strategy. Regular security audits and penetration testing should be conducted to identify similar authentication bypass vulnerabilities within the application's administrative interfaces, ensuring comprehensive protection against unauthorized access attempts.