v8: add restricted callbacks. #306
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Restricted callbacks can invoke only allow-listed hostcalls.
This mechanism is introduced primarily to prevent malicious plugins from
modifying the state from "proxy_on_memory_allocate" ("malloc") callbacks,
which could result in dangling pointers and/or out-of-bound access.
While there, limit the hostcalls available during early initialization
("_initialize", "_start", and "main" callbacks).
Reported by Chris Ertl from Google Security.
Signed-off-by: Piotr Sikora <[email protected]>
mpwarres
approved these changes
Aug 4, 2022
knm3000
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to knm3000/proxy-wasm-cpp-host
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this pull request
Aug 17, 2022
Restricted callbacks can invoke only allow-listed hostcalls.
This mechanism is introduced primarily to prevent malicious plugins from
modifying the state from "proxy_on_memory_allocate" ("malloc") callbacks,
which could result in dangling pointers and/or out-of-bound access.
While there, limit the hostcalls available during early initialization
("_initialize", "_start", and "main" callbacks).
Reported by Chris Ertl from Google Security.
Signed-off-by: Piotr Sikora <[email protected]>
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Restricted callbacks can invoke only allow-listed hostcalls.
This mechanism is introduced primarily to prevent malicious plugins from
modifying the state from "proxy_on_memory_allocate" ("malloc") callbacks,
which could result in dangling pointers and/or out-of-bound access.
While there, limit the hostcalls available during early initialization
("_initialize", "_start", and "main" callbacks).
Reported by Chris Ertl from Google Security.
Signed-off-by: Piotr Sikora [email protected]