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Re: Superuser unsanitized environment vulnerability on Android <= 4.2.x


Considering ChainsDD Superuser you mentioned.
Unfortunately, your mail describes just potential attack vectors. While I can't say for sure, Superuser isn't vulnerable at all, I'd like to note that su invokes the am script in the process with the credentials of the caller, not root. Thus, by manipulating the environment variables, file descriptors, signals, etc, the user can get yet another process with the same credentials, perhaps, with a shell or with an instance of Davlik VM inside.