CVE-2015-7360 in FortiSandbox
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the Web User Interface (WebUI) in Fortinet FortiSandbox before 2.1 allow remote attackers to inject arbitrary web script or HTML via the (1) serial parameter to alerts/summary/profile/; the (2) urlForCreatingReport parameter to csearch/report/export/; the (3) id parameter to analysis/detail/download/screenshot; or vectors related to (4) "Fortiview threats by users search filtered by vdom" or (5) "PCAP file download generated by the VM scan feature."
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Analysis
by VulDB Data Team • 08/22/2022
The vulnerability identified as CVE-2015-7360 represents a critical cross-site scripting weakness affecting the Web User Interface of Fortinet FortiSandbox versions prior to 2.1. This vulnerability exposes the system to remote code execution risks through malicious web script injection, potentially compromising the integrity and confidentiality of network security operations. The flaw exists within the web interface components that handle various user interactions and data processing functions, creating multiple attack vectors that adversaries can exploit to gain unauthorized access to sensitive information or disrupt system operations. The affected parameters include serial, urlForCreatingReport, and id, each representing distinct pathways for malicious input manipulation. These vulnerabilities fall under CWE-79, which specifically addresses cross-site scripting flaws in web applications, making them particularly dangerous in security monitoring environments where trusted access is assumed. The attack surface is expanded by the inclusion of Fortiview threats search functionality and VM scan feature PCAP file downloads, indicating that the vulnerability extends beyond simple parameter handling to encompass complex data processing workflows.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the FortiSandbox web interface components. Attackers can manipulate the serial parameter in alerts/summary/profile/ to inject malicious scripts that execute in the context of authenticated users' browsers, potentially leading to session hijacking or privilege escalation. Similarly, the urlForCreatingReport parameter in csearch/report/export/ allows for script injection that could redirect users to malicious sites or steal sensitive data from the reporting interface. The id parameter in analysis/detail/download/screenshot creates another vector where attackers can inject malicious code that executes when users attempt to download screenshots or view analysis details. These vulnerabilities are particularly concerning because they affect components that handle security-critical data and operations, potentially enabling adversaries to manipulate threat analysis results or gain unauthorized access to network monitoring information. The presence of both Fortiview search and VM scan PCAP download features suggests that the vulnerability impacts multiple functional areas of the security appliance, increasing the potential attack surface and impact scope.
The operational impact of CVE-2015-7360 extends beyond simple script injection to encompass potential compromise of the entire security monitoring infrastructure. An attacker exploiting these vulnerabilities could gain access to sensitive threat intelligence data, manipulate security reports, or redirect users to phishing sites that appear legitimate within the FortiSandbox interface. The ability to inject scripts through the VM scan PCAP download feature is particularly dangerous as it could enable attackers to execute malicious code when users attempt to analyze network traffic captures, creating a persistent threat vector. Organizations relying on FortiSandbox for threat analysis and incident response could experience significant operational disruption, including false positive alerts, data corruption, or complete loss of security monitoring capabilities. The vulnerability's classification under ATT&CK technique T1059.007, which covers script injection attacks, indicates that it aligns with established threat actor methodologies for compromising web-based security tools. This exposure could lead to extended detection times for actual threats, as malicious actors might use these vulnerabilities to hide their activities within the compromised monitoring environment.
Mitigation strategies for CVE-2015-7360 should prioritize immediate deployment of Fortinet FortiSandbox version 2.1 or later, which contains the necessary security patches to address these cross-site scripting vulnerabilities. Organizations should implement network segmentation and access controls to limit exposure of the FortiSandbox interface to trusted networks only, reducing the attack surface available to remote adversaries. Input validation and output encoding should be strengthened across all web interface components, particularly those handling user-supplied parameters in the affected paths. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other security tools within the network infrastructure. The implementation of web application firewalls and content security policies can provide additional protection layers against script injection attacks targeting the FortiSandbox interface. Organizations should also establish incident response procedures specifically addressing compromised security monitoring tools, ensuring rapid identification and containment of attacks exploiting these vulnerabilities. Security awareness training for administrators should emphasize the importance of keeping security appliances updated and monitoring for unusual network activity that might indicate exploitation attempts. The vulnerability's presence in multiple functional areas of the FortiSandbox platform underscores the need for comprehensive security patch management procedures that address all components of the security infrastructure rather than isolated modules.