[exim-dev] [Bug 3063] "SMTP Smuggling" attack

Góra strony
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Autor: Exim Bugzilla
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Dla: exim-dev
Stare tematy: [exim-dev] [Bug 3063] New: Partially vulnerable to "SMTP Smuggling" if pipelining is enabled
Temat: [exim-dev] [Bug 3063] "SMTP Smuggling" attack
https://bugs.exim.org/show_bug.cgi?id=3063

--- Comment #12 from Jeremy Harris <jgh146exb@???> ---
(In reply to Ian from comment #10)
> (In reply to Jeremy Harris from comment #6)
> > Security release 4.97.1 includes the relevant changes.
>
> Do any of these changes affect the octets which a transport filter sees? I
> have some suspect occurrences after upgrading (but not pointing a finger
> yet).


Not directly, but if Exim is sending messages that it has previously
received, the changes that are in the receive path would affect those
messages - so if you are using a transport filter...

(In reply to Ian from comment #10)
> Can we have a configuration knob to disable it?


> I am up for coding it.


It doesn't seem technically infeasible. I trust you have read around the
relevant comments in the code regarding the support, and are willing to
keep both pieces when it breaks - and include testcases for the testsuite,
and maintain the new code for the forseeable future.

Please open a separate wishlist item for tracking this.

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