Kayran has detected that the Version of Apache HTTP Server being used is vulnerable to Improper Neutralization of CRLF Sequences, aka ‘CRLF Injection’ (CWE-93). This type is also being referred to as “HTTP response splitting”.
Also known as CVE-2016-4975.
A possible CRLF injection allowing HTTP response splitting attacks for sites that uses mod_userdir.
By prohibiting CR or LF injection into the “Location” or other outbound header key or value in later version, the issue got resolved.
There’s a chance that this vulnerability will allow attackers to modify system files and information.
To fix CVE-2016-4975, upgrade the version of Apache HTTP Server being used to either 2.2.32 or 2.4.25.