Third you can use this to install SOME DLC for games.įorth you can install homebrew but you cannot launch it or use it in any way.įifth I can personally say that it does indeed work. Second you need your IDPS for the CFW to get it to work with all features.

OATmeal on the Universal Cereal Bus: Exploiting An.Seriously your all idiots if you have not come across this to begin with.įirstly you can use this to install games on to your OFW.A cache invalidation bug in Linux memory management.If the blkid code had run in the vold process, it would not have been necessary to serialize its output, and the injection of a fake UUID would not have worked. In this case, the weakly-enforced security boundary between vold and blkid_untrusted actually contributed to the vulnerability, rather than mitigating it. Unenforced security boundaries can be of limited use - for example, as a development aid while stronger isolation is in development -, but they can also have negative effects by obfuscating how important a component is for the security of the overall system.

Software vendors have, very rightly, been stressing for quite some time that it is important for security researchers to be aware of what is, and what isn't, a security boundary - but it is also important for vendors to decide where they want to have security boundaries and then rigorously enforce those boundaries. Notably, this attack crosses two weakly-enforced security boundaries: The boundary from blkid_untrusted to vold (when vold uses the UUID provided by blkid_untrusted in a pathname without checking that it resembles a valid UUID) and the boundary from the zygote to the TCB (by abusing the zygote's CAP_SYS_ADMIN capability).

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