https://issues.apache.org/bugzilla/show_bug.cgi?id=51103

--- Comment #3 from [email protected] 2011-04-22 12:35:33 EDT ---
Hi Stefan and thanks for taking the time to look at this.

(In reply to comment #1)
> (In reply to comment #0)
> > Steps to reproduce (A)
> > ----------------------
> > 1. Launch a slow-post attack using the OWASP HTTP DoS tool
> > (http://code.google.com/p/owasp-dos-http-post/downloads/list)
> > http_dos_cli --host 1.2.3.4 --port 80 --path /server-status --slow-post
> > --post-field j_username --connections 1000 --rate 1000 --timeout 5
> > 2. Sniff network traffic using Wireshark, observe requests being truncated 
> > and
> > handled, resulting in a 200 return code.
> 
> I couldn't reproduce this (but I don't have windows to actually try the tool).
> Can you provide the wireshark dump (maybe filtered to only contain one
> request)? Do you have mod_status listening for /server-status?

I have attached a Wireshark dump to the bug report. Let me know if this is what
you expected, I'm actually new to Wireshark.

We have mod_status listening on /server-status and it's responding correctly
when invoking with a browser.

Apache is now returning a 400 code, similar to the slow-headers attack. We did
tweak a few settings (disabled ModSecurity, turned off ExtendedStatus) so it
might have had that effect. I will investigate further.

> > Steps to reproduce (B)
> > ----------------------
> > 1. Launch a slow-headers attack
> > 2. Sniff network trafic using Wireshark, observe requests being dropped 
> > with a
> > 400 code being returned.
> 
> This happens in various situations and is fixed in trunk. The fixes should
> probably be backported to 2.2.x. The relevant commits are r820760 r919323
> r937858 r938265

This is good to know. Do you have any idea when these changes will be
backported or when 2.3 will be released?

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