Description of problem:

Since Fedora 27 the mpm_event_module is activated by default.
Outputs written by cgi-scripts to "stderr" during https-sessions are unusable and ending up in the file error_log instead of ssl_error_log. The entries made by cgi-scripts in the file error_log don't have any timestamp, User-Agent, referer et cetera. The LogFormat from httpd.conf is ignored. All I can see is the native output from the cgi-script.

Version-Release number of selected component (if applicable):

httpd-2.4.33-2

How reproducible:

Create a cgi-script which can output the word "Test" to stderr.

Steps to Reproduce:
1. Start httpd: systemctl start httpd.service
2. Send a https-request to a cgi-script which can produce an output (like the word "Test") to stderr.
3. Check the file /var/log/httpd/error_log

Actual results:

The file /var/log/httpd/error_log contains a line with the word "Test". No date, timestamp, et cetera. This is wrong and should be written to /var/log/httpd/ssl_error_log, because of ssl-request.

Expected results:

The file /var/log/httpd/ssl_error_log should contain a line with the word "Test" like this:

Wed Jun 13 16:44:20.295009 2018] [cgi:error] [pid 14844] [client ::1:59776] AH01215: Test: /var/www/cgi-bin-ssl/test.cgi

Additional info:

A possible workaround is to switch back to prefork MPM in the file /etc/httpd/conf.modules.d/00-mpm.conf

LoadModule mpm_prefork_module modules/mod_mpm_prefork.so
#LoadModule mpm_event_module modules/mod_mpm_event.so