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🛡️ IMDSv1 vs IMDSv2 on EC2: SSRF, metrics, risks, and secure migration

¿Qué riesgo existe realmente al mantener IMDSv1 habilitado en una instancia EC2? En 2019, el incidente de Capital One mostró que el acceso no autorizado al EC2 Instance Metadata Service (IMDS) puede formar parte de una cadena de ataque con consecuencias muy serias. El incidente terminó afectando información de más de 100 millones de personas. Más adelante veremos qué ocurrió y qué papel tuvo el…

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The article discusses the risks of maintaining IMDSv1 enabled on an EC2 instance. In 2019, the Capital One incident showed that unauthorized access to the EC2 Instance Metadata Service can have serious consequences, affecting over 100 million people. IMDSv1 allows software running on an EC2 instance to query information about the instance, but it poses a security risk.

Migrating to IMDSv2 is recommended, but it requires checking dependencies to avoid breaking old applications, agents, SDKs, or scripts. IMDSv2 adds a token-based session, providing an additional layer of security.

Written by urgent.news from Dev.to's report — not a translation of it. Machine-written — may contain errors; check the original before relying on it.

Read the original at dev.to →

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