ssrf

Identify SSRF entry points by locating parameterized URL fetchers, file fetchers, and redirect logic. Apply common payloads to these inputs and observe server responses or side effects to confirm the vulnerability.

Blind SSRF occurs when server-side request responses are not directly visible, requiring out-of-band verification techniques. Basic SSRF returns direct responses, while blind scenarios need side effects or external interactions to validate exploitation impact.

Bypass SSRF protections using specialized payloads targeting cloud IMDS and internal metadata endpoints. Techniques involve redirect logic manipulation and alternative URL formats to coerce servers into fetching unintended internal resources despite input restrictions.

Security testing for SSRF requires careful verification steps to confirm exploitation without impacting production systems. The workflow focuses on assessing risk and validating impact through controlled payload delivery and response observation.

Common SSRF payloads target internal IP addresses, cloud metadata endpoints, and alternative protocol formats. These payloads test parameterized URL fetchers and redirect logic to determine if servers can be coerced into fetching unintended resources.

Remediate SSRF vulnerabilities by implementing input validation, URL allowlisting, and blocking internal metadata access. Follow outlined testing workflows to harden applications and prevent exfiltration of sensitive resources from unintended locations.