overlayFS security concern

[Kun Zhao]

Hi Team,

Have the following case ever been discussed before?,
Anyone knows the root password will be able to let bmc run their own code by scp the code into bmc with the same file path as any services in rootfs. It will make the secure boot totally useless.

So besides,
1. disable scp (but scp is one of the firmware upload way)
2. don’t use overlayFS (but it’s really useful for debugging during develop, and configuration management)
Any other solutions?



Thanks.
Kun

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