- Papercut ng unable to retrieve valid data software#
- Papercut ng unable to retrieve valid data professional#
There is a common misconception that displaying the port in this manner can lead to a security risk.
Normally users access the web interface of the PaperCut server by going to a URL like this:, where the port used by PaperCut (9192) is visible. Have users access the Web Interface using standard ports This might also be a problem if the server name doesn’t match the common name or subject alternative name on the certificate. This could be a problem if your organization uses a reverse proxy. What can go wrong? When this option is used it is important that all users access PaperCut via this defined host name, and that this host name is accessible to all users. See: Override the “host” header for redirects
Papercut ng unable to retrieve valid data software#
This can also apply if security audit software reports “Web Server HTTP Header Internal IP Disclosure” or something similar. In a NAT environment this might not be ideal if the server’s IP address is considered private. by manually crafting an HTTP request), the target location is based on the server’s own hostname or IP address. When performing a redirect, the target location is based on the Host header that the web browser requested. PaperCut NG/MF’s web server requires the ability to redirect users to new pages. Prevent the internal IP address from being disclosed Paste the following section to the server.properties file to set the cookie policy.(On a 64-bit PaperCut MF server, this path might be C:\Program Files\ PaperCut MF\server\server.properties). In a text editor, open the following file: /server/server.properties.The following setting is specifically to address when penetration tests flag less significant cookies like the locale setting (which we don’t manage). This generally won’t be needed because, if you already followed the steps in the section above to Force clients to use SSL/HTTPS, then cookies will already be secure. The “Secure” flag ensures that the details of a session cookie will not be disclosed if a browser subsequently requests the information over a plain HTTP connection, whilst the “ HttpOnly” flag dictates that the cookie can only be accessed by the server itself, minimizing the chance of it being intercepted and interpreted by a third party.įor sites with particularly rigorous concerns around cookies, additional configuration can allow these flags to be included uniformly for all other cookie types issued by the web server. Starting with PaperCut NG/MF 17.1, a session cookie generated for access originating over a secure connection is automatically provided alongside both the “Secure” and “ HttpOnly” flags within the HTTP response header. For each section, we’ve tried our best to describe what can go wrong and specifically what you should test after implementing. We have had many support phone calls and remote sessions with customers who forgot they had enabled these settings or did not fully test their environments and as a result they were forced to troubleshoot why users began seeing certificate errors in the browser or why older copiers stopped working with PaperCut. The instructions below represent a collection of our best advice when it comes to securing your PaperCut server.īe aware that there are tradeoffs to each of these options. For the sake of brevity, some security settings that are already on by default, like CSRF Validation, are not mentioned here. Your organization may have other means to secure your environment such as a Web Application Firewall, but this article focuses on the things you can configure within PaperCut to enhance security, with a focus on the embedded web server. This article focuses on the security of the PaperCut application server. What configuration changes can we make to PaperCut applications to ace our next pen-test or harden our server against would-be ne’er-do-wells?”
Papercut ng unable to retrieve valid data professional#
“As an infosec professional or a security-conscious sysadmin, I am looking to make our PaperCut server as secure as possible.
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