Webhook-url-http-3a-2f-2f169.254.169.254-2fmetadata-2fidentity-2foauth2-2ftoken -

Blind SSRF → Cloud Takeover: Exploiting Callback ... - Medium

An attacker finds a feature that asks for a URL (like a webhook or image uploader). Payload: They enter the Azure Metadata URL. Execution: Your server fetches the URL internally.

If you are seeing this URL in a "webhook" context, it usually indicates one of two things: a legitimate integration for cloud identity or a vulnerability being tested. 🛠� Legitimate Use Cases

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Cybersecurity Insights Reading time: 4 minutes

If you are working with Azure security, I can help you check if your VMs are properly configured against these attacks.

Webhooks are user-defined HTTP callbacks triggered by specific events. For example: Blind SSRF → Cloud Takeover: Exploiting Callback

In this deep-dive article, we will dissect every component of this keyword, explain why it poses a severe security risk, show how attackers exploit webhook functionality, and provide actionable steps to protect your infrastructure.

Cloud providers have introduced security upgrades to mitigate automated SSRF attacks against metadata endpoints.

Executive Summary * In total we found four Azure services vulnerable to SSRF: Azure API Management, Azure Functions, Azure Machine... Orca Security Execution: Your server fetches the URL internally

Server-Side Request Forgery occurs when an attacker forces a server-side application to make HTTP requests to an arbitrary domain or IP chosen by the attacker. How Webhooks Become Vulnerable

The string uses percent-encoding (also called URL encoding) to represent characters that are unsafe or have special meaning in URLs: