CVE-2022-2900 in parse-url
Summary
by MITRE • 09/14/2022
Server-Side Request Forgery (SSRF) in GitHub repository ionicabizau/parse-url prior to 8.1.0.
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Analysis
by VulDB Data Team • 10/17/2022
The vulnerability identified as CVE-2022-2900 represents a critical server-side request forgery flaw discovered in the ionicabizau/parse-url npm package, affecting versions prior to 8.1.0. This package serves as a URL parsing utility commonly used in web applications for processing and validating URL structures. The SSRF vulnerability arises from inadequate input validation and sanitization within the package's URL handling mechanisms, allowing malicious actors to manipulate the parsing process and potentially redirect requests to internal systems or external malicious endpoints. The flaw specifically manifests when the package processes URLs containing crafted parameters that bypass normal validation checks, enabling unauthorized access to internal network resources that should remain isolated from external exposure.
The technical implementation of this vulnerability stems from the package's failure to properly validate and sanitize URL components before processing them through internal request mechanisms. Attackers can exploit this weakness by crafting malicious URLs that contain internal IP addresses, localhost references, or other sensitive network targets. The vulnerability aligns with CWE-918, which categorizes server-side request forgery as a weakness where applications fail to properly validate and restrict external requests originating from server-side components. This flaw allows threat actors to potentially access internal services, bypass firewalls, or perform reconnaissance against internal network infrastructure that would normally be protected from direct external access. The attack vector typically involves manipulating URL parsing logic to redirect requests to unintended destinations, leveraging the package's functionality to execute unauthorized network operations.
The operational impact of CVE-2022-2900 extends beyond simple data exposure, as it provides attackers with potential access to internal network resources and sensitive systems. Applications using vulnerable versions of the parse-url package may inadvertently expose internal services, databases, or APIs to external attackers who can leverage the SSRF vulnerability to perform lateral movement within network environments. The vulnerability can facilitate more sophisticated attacks such as internal port scanning, service enumeration, or even privilege escalation if the affected applications run with elevated permissions. This risk is particularly concerning in enterprise environments where the parse-url package might be used across multiple applications and services, potentially creating a widespread attack surface. The vulnerability also enables attackers to perform data exfiltration from internal systems or manipulate internal services through crafted requests that appear legitimate to the target infrastructure.
Mitigation strategies for CVE-2022-2900 primarily focus on immediate version upgrades to 8.1.0 or later, which contain proper input validation and sanitization measures. Organizations should conduct comprehensive inventory assessments to identify all applications and systems utilizing vulnerable versions of the parse-url package, implementing patch management protocols to ensure timely remediation across all affected environments. Network-level mitigations include implementing strict egress filtering, firewall rules to restrict outbound connections from affected applications, and monitoring for suspicious network activity patterns that might indicate exploitation attempts. The remediation approach aligns with ATT&CK technique T1071.004, which addresses application layer protocol usage, where organizations should enforce strict validation of all external inputs to prevent malicious requests from being processed. Additional defensive measures involve implementing web application firewalls, input validation layers, and regular security testing to identify potential exploitation vectors. Security teams should also establish monitoring procedures to detect anomalous network requests that might indicate SSRF exploitation attempts, particularly focusing on requests to internal IP ranges or unusual domain patterns that could indicate malicious activity.