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Re: Fwd: VSFTPD Remote Heap Overrun (low severity)


From: Ramon de C Valle <rcvalle () redhat com>
Date: Mon, 12 Dec 2011 17:09:44 -0500 (EST)


To fill in the SELinux details for the people following along at
home:

The problem is that at open() time, there's no good way to specify
what the
expected label is (now *that* might be an interesting extention to
open() for
some enterprisng grad student) - so as long as the file has *any*
foo_t label
that the program is allowed to access, the open() will succeed.
 There's no way
for it to say "I'm opening what *should* be a locale_t file, so if
I'm being
coerced into opening a user_foo_t, please nuke the request".
Exactly. Thanks for putting this into more concise wording.




-- 
Ramon de C Valle / Red Hat Security Response Team

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