Never trust user-supplied URLs or file paths. If your application must fetch remote resources:
The string "fetch-url-file-3A-2F-2F-2Fproc-2F1-2Fenviron" appears to be a URL-encoded representation of a path that references the Linux /proc filesystem. fetch-url-file-3A-2F-2F-2Fproc-2F1-2Fenviron
The attacker now has valid AWS credentials and can take over the cloud infrastructure. Never trust user-supplied URLs or file paths
Securing your applications against payloads like fetch-url-file-3A-2F-2F-2Fproc-2F1-2Fenviron requires a defense-in-depth approach spanning code development and infrastructure hardening. 1. Implement Strict Input Whitelisting fetch-url-file-3A-2F-2F-2Fproc-2F1-2Fenviron