[Bug 839569] Re: Apache2 is still Range header DoS vulnerable if gzip compression is enabled

Steve Beattie sbeattie at ubuntu.com
Wed Sep 7 06:22:12 UTC 2011


Paweł,

Can you confirm that sending a request with an overlapping byte range
e.g.:

  HEAD / HTTP/1.1
  Host: localhost
  Range:bytes=1-15,10-35,8-9,14-22,0-5,23-
  Accept-Encoding: gzip
  Connection: close

returns "200 OK"?

Perhaps you could report what modules you have loaded? "apache2ctl -t -D
DUMP_MODULES" will do it.

I'm going to leave this bug open and make it public, as I've received
another report via email of a lucid user claiming that the update didn't
help their system, either, and if possible, I'd like them to chime in
here, too.


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Title:
  Apache2 is still Range header DoS vulnerable if gzip compression is
  enabled

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