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Wonderfall 2022-03-31 00:33:39 +02:00
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content/posts/docker-hardening.md
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@ -58,7 +58,7 @@ As an image maintainer, you can sign your images to improve the authenticity ass
## Leave my root alone! ## Leave my root alone!
### Attack surface ### Attack surface
Traditionnaly, Docker runs as a daemon owned by root. That also means that root in the container is actually the root on the host and may be a few commands away from compromising the host. More generally, the attacker has to exploit the available attack surface to escape the container. There is a huge attack surface, actually: the Linux kernel. [Someone wise once said](https://grsecurity.net/huawei_hksp_introduces_trivially_exploitable_vulnerability): Traditionally, Docker runs as a daemon owned by root. That also means that root in the container is actually the root on the host and may be a few commands away from compromising the host. More generally, the attacker has to exploit the available attack surface to escape the container. There is a huge attack surface, actually: the Linux kernel. [Someone wise once said](https://grsecurity.net/huawei_hksp_introduces_trivially_exploitable_vulnerability):
> The kernel can effectively be thought of as the largest, most vulnerable setuid root binary on the system. > The kernel can effectively be thought of as the largest, most vulnerable setuid root binary on the system.