Created a blog post and tool on how to collect printer information with IPP. Looking for feedback.

The blog post and accompanying tool focus on leveraging the Internet Printing Protocol (IPP) to enumerate printer information such as printer attributes, current print jobs, and documents associated with those jobs. IPP is a widely used protocol wrapped in HTTP POST requests, commonly exposed on port 631/TCP. The author demonstrates how operations like Get-Printer-Attributes, Get-Jobs, Get-Job-Attributes, and Get-Document can be used to extract potentially sensitive information from printers or print servers. The effectiveness of this information gathering depends on how well the printer's IPP implementation is secured, including use of encryption, authentication, and operation restrictions. The post references historical mass printer attacks and notes that while IPP itself should not allow remote code execution if properly configured, misconfigurations can lead to information disclosure. The tool provided automates enumeration of printers and jobs via IPP for educational purposes.

The impact is primarily information disclosure of printer details, print job metadata, and potentially the documents queued for printing if the printer allows such operations without proper authentication or encryption. This can lead to exposure of confidential documents or user information. There is no indication of remote code execution or direct compromise from IPP alone if properly configured. The risk depends on the printer's security posture and network exposure.

No official patch or fix is applicable as this is a demonstration of protocol usage rather than a software vulnerability. Mitigation involves proper configuration of printers and print servers to enforce authentication, restrict IPP operations, and use encryption such as HTTPS for IPP communications. Disabling unnecessary IPP operations like document retrieval and limiting network exposure of printers reduces risk. Organizations should review printer configurations to ensure they do not leak sensitive information via IPP.