CVE-2023-25690 Security vulnerability for MOI
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CVE-2023-25690 Security vulnerability for MOI


Article ID: 270521


Updated On:


Mainframe Operational Intelligence


Question about CVE-2023-25690 Security vulnerability for MOI

Can you please verify and provide more information on this. 

Where: Server_Virtual_Unix_Linux 

Vulnerabilty: CVE-2023-25690

Description:  Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack.Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, something like:RewriteEngine onRewriteRule \"^/here/(.*)\" \$1\; [P]ProxyPassReverse /here/ splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version 2.4.56 of Apache HTTP Server.




Release : 2.1


Regarding the concern about the security vulnerability CVE-2023-25690 as it relates to MOI.

MOI does not use Apache HTTP Server in the MOI deployment.   If the security scan indicated such a vulnerability it is most likely that it is because of a presence of the Apache HTTP server on the host machine where MOI is installed, independent of MOI. 

Here are the steps to check this on RHEL:

Is Apache 2 service running? Run the following systemctl command to determine:

systemctl status httpd

If it is running stop it and disable the startup at boot time:

systemctl disable httpd
systemctl stop httpd

You can verify if it is running after rebooting/startup:

systemctl status httpd