Invicti detected a Server-Side Request Forgery based on pattern matching and confirmed the vulnerability using specific ELMAH related requests.
This vulnerability can cause highly sensitive data leaks on current sessions.
Server-Side Request Forgery allows an attacker to make local and/or remote network requests while masquerading as the target server.
Elmah is a powerful tool that helps developers debug and resolve problems in their applications. However, it is configured improperly on target website, and that allows attackers to gain information about requests and responses to the application. An attacker can obtain information such as:
This means that the attacker can hijack any active user's session by using their session details.
In addition to above, apply the following changes in your web.config
file to disable remote access to the Elmah:
<appSettings>
<add key="elmah.mvc.requiresAuthentication" value="true" />
<add key="elmah.mvc.allowedRoles" value="Admin" />
</appSettings>
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