Detection Guidance

The provided information does not include specific detection methods or commands to identify this vulnerability on a network or system.

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Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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Executive Summary

This vulnerability in Apache Airflow involves a flaw in the login redirect route where authenticated users could craft URLs that bypass the `is_safe_url` check.

Specifically, the issue was that URLs containing triple forward slashes (`///`) or similar special character prefixes were treated as safe due to how the JavaScript URL constructor parses URLs according to WHATWG standards.

This allowed attackers to redirect users from a trusted Airflow domain to an attacker-controlled origin.

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Impact Analysis

The vulnerability can lead to malicious redirection attacks where users are redirected from the trusted Airflow domain to potentially harmful external sites controlled by attackers.

This could be exploited to perform phishing attacks, steal user credentials, or deliver malicious payloads by tricking users into trusting the redirected URL.

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Mitigation Strategies

To mitigate this vulnerability, users are advised to upgrade Apache Airflow to version 3.2.2 or later.

As a defense-in-depth measure, deployment operators can place Airflow behind a reverse proxy that strips off-domain 'next=' query parameters before they reach the login endpoint.

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