CVE-2013-3962 in Gxv Device
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Grandstream GXV3501, GXV3504, GXV3601, GXV3601HD/LL, GXV3611HD/LL, GXV3615W/P, GXV3651FHD, GXV3662HD, GXV3615WP_HD, GXV3500, and possibly other camera models before firmware 1.0.4.44, allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO.
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Analysis
by VulDB Data Team • 02/21/2018
The vulnerability identified as CVE-2013-3962 represents a critical cross-site scripting flaw affecting multiple Grandstream camera models including the GXV3501, GXV3504, GXV3601, and various other HD and standard models. This vulnerability resides in the web interface handling of HTTP requests, specifically in the PATH_INFO parameter processing which is commonly used in web applications to pass additional path information to server-side scripts. The flaw allows remote attackers to inject malicious web scripts or HTML content into the device's web interface without requiring any authentication or prior access to the system. The vulnerability affects devices running firmware versions prior to 1.0.4.44, making a significant portion of deployed camera systems potentially vulnerable to exploitation.
The technical root cause of this vulnerability can be classified as CWE-79 - Improper Neutralization of Input During Web Page Generation, which occurs when web applications fail to properly sanitize or escape user-supplied input before incorporating it into dynamically generated web pages. In this case, the PATH_INFO parameter is not adequately validated or escaped, allowing attackers to inject malicious scripts that will execute in the context of other users who view the affected web interface. This type of vulnerability falls under the ATT&CK framework category of T1566 - Phishing, as it enables attackers to craft malicious web pages that can compromise user sessions and potentially lead to further system compromise.
The operational impact of this vulnerability is substantial for organizations relying on Grandstream cameras for security monitoring and surveillance. An attacker who successfully exploits this vulnerability can execute arbitrary scripts in the browser of any user who accesses the affected camera's web interface, potentially leading to session hijacking, credential theft, or redirection to malicious websites. 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 devices. This makes the vulnerability particularly dangerous in environments where camera systems are exposed to external networks or where administrators might access the web interfaces from unsecured locations. The vulnerability affects not just individual devices but entire deployments of these camera models, potentially compromising the security of multiple surveillance systems simultaneously.
Organizations should immediately implement mitigations including firmware updates to version 1.0.4.44 or later, which contain the necessary patches to address the PATH_INFO parameter validation issues. Network segmentation should be implemented to limit access to camera web interfaces to authorized personnel only, and access controls should be strengthened to prevent unauthorized users from reaching the vulnerable web interfaces. Additionally, implementing web application firewalls and monitoring for suspicious HTTP requests containing script tags or unusual PATH_INFO parameters can help detect and prevent exploitation attempts. Regular vulnerability assessments and penetration testing should be conducted to identify similar issues in other networked devices and ensure that proper input validation mechanisms are in place across all web-facing applications and services.