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Posted to bugs@httpd.apache.org by bu...@apache.org on 2021/02/07 12:18:28 UTC

[Bug 65127] New: Mix-Responses

https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

            Bug ID: 65127
           Summary: Mix-Responses
           Product: Apache httpd-2
           Version: 2.4.3
          Hardware: Other
            Status: NEW
          Severity: critical
          Priority: P2
         Component: All
          Assignee: bugs@httpd.apache.org
          Reporter: abdullah@accusolutions.net
  Target Milestone: ---

Dears,

I hope this gets investigated ASAP as it caused a critical issue.

The very basic data I can provide is that apache returned mixed-responses to
two different users with 38ms time difference between their request, it simply
return the (User A) response to (User B) and vice versa.

I can't provide much details about the incident yet I really need to know if it
ever happened with someone else and what should we do to be able to trace the
issue in a proper way.

Thanks & Regards,

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

Eric Covener <co...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #3 from Eric Covener <co...@gmail.com> ---
Config? logs?

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

Abdullah Al-Faqeir <ab...@accusolutions.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Mix-Responses               |Switched Responses
                 OS|                            |All

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

--- Comment #5 from Abdullah Al-Faqeir <ab...@accusolutions.net> ---
Created attachment 37732
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=37732&action=edit
Access Logs

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

--- Comment #6 from Abdullah Al-Faqeir <ab...@accusolutions.net> ---
Attached the config and access logs.
In access logs, you can see lines 2 and 3 this is where the switch happened.
The Android UserAgent correct response size is 12288 byte and iPhone user
correct response size is 960 byte but on 16:38:36 this wasn't the case. We are
trying to figure out the switch that happened on the apache level or from
RestAPI where the PHP curl on the apache is calling. But there is a firewall
between the apache server and RestAPI server, and we have checked the packet
sizes it shows the response from RestAPI is correct.

Thank you

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

--- Comment #1 from Yann Ylavic <yl...@gmail.com> ---
Without more context, here is a very basic guess: httpd is used as a reverse
proxy to a Microsoft application using NTLM authentication?

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

--- Comment #2 from Abdullah Al-Faqeir <ab...@accusolutions.net> ---
No actually, it's a simple php api that calls XML/Rest API through CURL which
uses Apache via XAMPP

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[Bug 65127] Switched Responses

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=65127

--- Comment #4 from Abdullah Al-Faqeir <ab...@accusolutions.net> ---
Created attachment 37731
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=37731&action=edit
Apache Config

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