from the cve
This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions.
It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration “require all denied”, these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions.
apachectl -v for version check, this is a server issue and not tied to openemr itself
Just to clarify, I did the following after signing into the AWS webserver EC2 instance:
ubuntu@ip-10-0-2-18:~$ sudo docker exec -it standard_openemr_1 sh /var/www/localhost/htdocs/openemr # apachectl -v sh: apachectl: not found
However, this worked:
/var/www/localhost/htdocs/openemr # /usr/sbin/httpd -v
Server version: Apache/2.4.39 (Unix)
Server built: May 5 2019 12:38:09