Editing FailMail
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FailMail is an Exploit in the | == Introduction == | ||
FailMail is an Exploit in the PSVita Mail application, | |||
that allowed for System Uri Calling, (which resulted in Arbitrary file Dumping) and Arbitrary File Writing | |||
It was patched in [[3.55]] and above firmware's | |||
= | == Arbitrary File Writing == | ||
This is achieved by making the name of the attachment be "../../../" and then the path to the file you wanted to overwrite, | |||
this worked because on [[3.55]] email attachments are saved to ux0:/temp/email/ as there full name which would become ux0:/temp/email/../../../ux0:/id.dat which would overwrite id.dat. | |||
however, in 3.55 and above, there is an additional check to get the filename of the email excluding the path and write it there with that name instead | |||
== System URI Calling == | |||
(system uri's are URI's defined in param.sfo surrounded by triangle brackets. and they can only be run by the system and not the browser) | |||
This was achieved simply by receiving an email with an <a href to a System URI for example. if you did <a href="psnreg:">Run PSN Reg</a> | |||
when you clicked the link inside the email app. it'd run it, this was also fixed in [[3.55]] simply by adding a check if the URI you clicked on | |||
is not a SYSTEM uri. | |||
== System URI | |||
There was also a bug that came about because of this that allowed you to dump any file you wanted, if you called 'email:send?attach=' and then a path to a file you could add any file on the system that you wanted as an attachment and then send it to yourself. this was addressed in [[3.57]] where now the email application can only attach files from photo0: and ux0:/calendar anywhere else will result in a 0byte file being sent. | There was also a bug that came about because of this that allowed you to dump any file you wanted, if you called 'email:send?attach=' and then a path to a file you could add any file on the system that you wanted as an attachment and then send it to yourself. this was addressed in [[3.57]] where now the email application can only attach files from photo0: and ux0:/calendar anywhere else will result in a 0byte file being sent. | ||