CVE-2023-36679 in Spectra Plugin
Summary
by MITRE • 03/28/2024
Server-Side Request Forgery (SSRF) vulnerability in Brainstorm Force Spectra.This issue affects Spectra: from n/a through 2.6.6.
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Analysis
by VulDB Data Team • 03/05/2025
The CVE-2023-36679 vulnerability represents a critical server-side request forgery flaw discovered within the Brainstorm Force Spectra plugin, which is widely used for website building and customization. This vulnerability exists in versions prior to 2.6.6 and allows malicious actors to manipulate the server's behavior by making unauthorized requests to internal or external systems. The flaw stems from insufficient validation of user-supplied input that is processed by the plugin's server-side components, creating an attack vector that can be exploited to bypass security controls and access restricted resources.
The technical implementation of this SSRF vulnerability occurs when the Spectra plugin fails to properly sanitize or validate URLs provided by users through its interface or API endpoints. When a user submits content or configuration data that includes a URL parameter, the plugin processes this input without adequate filtering mechanisms that would prevent access to internal network resources or external malicious domains. This allows an attacker to craft requests that can force the server to make HTTP requests to arbitrary destinations, potentially enabling access to internal systems, data exfiltration, or further exploitation of the target environment. The vulnerability operates at the application layer and can be classified under CWE-918, which specifically addresses server-side request forgery vulnerabilities where applications fail to properly validate user input before making network requests.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable attackers to perform reconnaissance activities against internal network infrastructure that would normally be protected by firewalls or other security controls. An attacker could leverage this vulnerability to scan internal network ranges, access internal services that are not exposed to the public internet, or even pivot to other systems within the network. The potential for privilege escalation increases when the vulnerable server has elevated permissions or access to sensitive internal resources, making this vulnerability particularly dangerous in enterprise environments where multiple systems are interconnected. According to ATT&CK framework, this vulnerability maps to T1071.004 for application layer protocols and T1566 for phishing techniques that could be employed to initially gain access to systems before exploiting this SSRF flaw.
Mitigation strategies for CVE-2023-36679 should include immediate patching to version 2.6.6 or later, which contains the necessary input validation fixes to prevent unauthorized requests. Organizations should also implement network-level restrictions such as firewall rules that prevent outbound connections from the web server to internal networks, particularly blocking access to common internal ports and services. Additionally, implementing proper input validation at multiple layers including application firewalls, web application firewalls, and server-side code validation can provide defense-in-depth protection. Security monitoring should be enhanced to detect unusual outbound network requests that may indicate exploitation attempts, and regular security assessments should be conducted to identify similar vulnerabilities in other plugins or components. The fix implemented by Brainstorm Force addresses the core validation issue by ensuring that all user-provided URLs are properly sanitized and restricted to allow only legitimate external destinations while blocking access to internal network resources.