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From inside an EC2 Linux instance, a user or application can run:

Decoding the whole string yields:

Even if credentials are leaked, the damage can be contained.

The URL http://169.254.169 is a critical AWS instance metadata endpoint, frequently targeted in Server-Side Request Forgery (SSRF) attacks to steal temporary IAM credentials. Security experts recommend enforcing Instance Metadata Service Version 2 (IMDSv2) to mitigate these risks by requiring session-oriented tokens. Read the full analysis at Hacking Articles .

Recommendations * Validate and sanitize user-supplied URLs. * Block requests to internal IP ranges like 254.169.254 (IMDS) * Log a... Hacking Articles

To solve this, AWS released , which introduces "session-oriented" security:

The /iam/ path revealed that the information they sought was related to Identity and Access Management (IAM), a crucial aspect of the kingdom's security.

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Request-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta: Data-2fiam-2fsecurity Credentials-2f Fix

From inside an EC2 Linux instance, a user or application can run:

Decoding the whole string yields:

Even if credentials are leaked, the damage can be contained.

The URL http://169.254.169 is a critical AWS instance metadata endpoint, frequently targeted in Server-Side Request Forgery (SSRF) attacks to steal temporary IAM credentials. Security experts recommend enforcing Instance Metadata Service Version 2 (IMDSv2) to mitigate these risks by requiring session-oriented tokens. Read the full analysis at Hacking Articles .

Recommendations * Validate and sanitize user-supplied URLs. * Block requests to internal IP ranges like 254.169.254 (IMDS) * Log a... Hacking Articles

To solve this, AWS released , which introduces "session-oriented" security:

The /iam/ path revealed that the information they sought was related to Identity and Access Management (IAM), a crucial aspect of the kingdom's security.

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