[Esd-l] Detection rule for sendmail header exploit

[John D. Hardin]

On Wed, 5 Mar 2003, Mike McCandless wrote:

> Could the line you provided
> 
> ^(From|To|CC|Reply-To|Resent-From): .*<>.*<>.*<>.*<>.*<>.*\(.*\)
> 
> be added to header checks in the MTA?  I use Postfix, so I could add
> this to the header regular expression table...and wouldn't have to worry
> about ever seeing it in procmail...

Yes, that should work.

Note that this may not detect all variants of attacks on this
vulnerability.

--
 John Hardin KA7OHZ    ICQ#15735746    http://www.impsec.org/~jhardin/
 jhardin at impsec.org                        pgpk -a jhardin at impsec.org
 key: 0xB8732E79 - 2D8C 34F4 6411 F507 136C  AF76 D822 E6E6 B873 2E79
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 ...voice or no voice, the people can always be brought to the bidding
 of the leaders. That is easy. All you have to do is tell them they
 are being attacked and denounce the pacifists for lack of patriotism
 and exposing the country to danger. It works the same way in any
 country.
                                            -- Hermann Goering
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