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HTTP TRACE / TRACK Methods Allowed

TRACE and TRACK are HTTP methods that are used to debug web server connections.

A local or remote unprivileged user may be able to abuse the HTTP TRACE/TRACK functionality to gain access to sensitive information in HTTP headers when making HTTP requests.

Apache
To disable these methods, add the following lines for each virtual host in your configuration file :

RewriteEngine on
RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
RewriteRule .* – [F]

Alternatively, note that Apache versions 1.3.34, 2.0.55, and 2.2 support disabling the TRACE method natively via the ‘TraceEnable’ directive.

Microsoft IIS

The TRACK method can be added to Microsoft’s URLScan DenyVerbs section. It should not be in the AllowVerbs section in the urlscan.ini file.

Use the URL Scan Tool to deny HTTP TRACE requests or to permit only the methods needed to meet site requirements and policy. The default configurations of Urlscan 2.5 (both baseline and SRP) only permit GET and HEAD methods.

NGINX

The majority of web sites only require the GET, HEAD & POST HTTP methods. Enabling the TRACE or DELETE method can pose a risk to your server leaving it vulnerable to a Cross-Site Tracking attack.

Modify the default.conf file and add the following under “server block” to mitigate the risk of a Cross-Site Tracking attack.

if ($request_method !~ ^(GET|HEAD|POST)$ )
{
return 405;
}

Modifying the code will return a “405 – Not Allowed” if anyone attempts to use the DELETE, TRACE, PUT or OPTIONS method.