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Reviving the modprobe_path Technique: Overcoming search_binary_handler() Patch
(
theori.io
)
8 points
by
todsacerdoti
10 months ago
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3 comments
sour-taste
10 months ago
[–]
Does anyone know why modprobe_path isn't in read only memory? Would just making it const char be enough to avoid this technique?
sour-taste
10 months ago
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parent
[–]
Oh, it's because it can be set by /proc/sys/kernel/modprobe
rfoo
10 months ago
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root
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parent
[–]
There is CONFIG_STATIC_USERMODEHELPER that disables the sysctl you mentioned and actually make modprobe_path read-only.
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