CVE-2022-25850 in proxyscotch
Summary
by MITRE • 05/01/2022
The package github.com/hoppscotch/proxyscotch before 1.0.0 are vulnerable to Server-side Request Forgery (SSRF) when interceptor mode is set to proxy. It occurs when an HTTP request is made by a backend server to an untrusted URL submitted by a user. It leads to a leakage of sensitive information from the server.
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Analysis
by VulDB Data Team • 05/04/2022
The vulnerability identified as CVE-2022-25850 affects the github.com/hoppscotch/proxyscotch package version prior to 1.0.0 and represents a critical server-side request forgery flaw that can be exploited through the interceptor mode configuration. This security weakness arises when the application operates in proxy mode and processes HTTP requests originating from backend servers that are directed to user-submitted URLs without proper validation or sanitization. The flaw creates a dangerous attack vector where malicious actors can manipulate the application to make requests to internal systems or external endpoints that should remain inaccessible to unauthorized users.
The technical implementation of this vulnerability stems from inadequate input validation mechanisms within the proxy handling logic. When the interceptor mode is configured to proxy functionality, the application fails to properly validate or sanitize URLs submitted by users before forwarding requests to backend servers. This creates an environment where user-controllable input can directly influence the destination of HTTP requests, allowing attackers to craft malicious requests that bypass normal network security controls. The vulnerability aligns with CWE-918, which specifically addresses server-side request forgery vulnerabilities where attackers can manipulate server-side applications to make requests to arbitrary destinations.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to perform reconnaissance on internal network resources, access sensitive data stored on backend servers, and potentially escalate privileges within the affected system. Attackers can leverage this flaw to enumerate internal services, access configuration files, or even gain access to databases or other critical backend systems that should be isolated from external access. The vulnerability is particularly dangerous because it operates at the server level where the application has elevated privileges and can access resources that would normally be protected by network segmentation controls.
Security practitioners should consider this vulnerability in the context of the MITRE ATT&CK framework, specifically under the T1190 technique for proxying through compromised systems. The flaw enables attackers to establish persistent access patterns that can bypass traditional network monitoring and firewall rules. Organizations using this package should immediately implement mitigations including input validation controls, URL sanitization, and network segmentation to prevent unauthorized access to internal resources. The recommended remediation involves updating to version 1.0.0 or later where proper validation mechanisms have been implemented to prevent untrusted URL submissions from being processed in proxy mode. Additionally, implementing proper access controls, network monitoring, and regular security assessments can help detect and prevent exploitation attempts targeting this vulnerability.