CVE-2022-48471 in Printer
Summary
by MITRE • 06/16/2023
There is a misinterpretation of input vulnerability in Huawei Printer. Successful exploitation of this vulnerability may cause the printer service to be abnormal.
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Analysis
by VulDB Data Team • 12/17/2024
The vulnerability identified as CVE-2022-48471 represents a critical misinterpretation of input flaw within Huawei printer implementations that fundamentally compromises the device's operational integrity. This weakness manifests when the printer system fails to properly validate or process incoming data streams, leading to potential service disruptions that can cascade into broader network operational issues. The vulnerability resides in the printer's input handling mechanisms where malformed or unexpected data inputs are not adequately sanitized before processing, creating a pathway for malicious actors to exploit the device's processing logic.
From a technical perspective, this vulnerability aligns with CWE-20, which specifically addresses "Improper Input Validation" in software systems. The flaw demonstrates characteristics consistent with improper handling of user-supplied data within printer firmware, where the device's interpretation of input parameters becomes unreliable. The printer's processing engine likely encounters unexpected data formats or sequences that cause it to misinterpret commands, leading to service failures or complete system unavailability. This misinterpretation can occur during print job processing, configuration updates, or even routine operational commands that should normally be handled without issue.
The operational impact of CVE-2022-48471 extends beyond simple service disruption to potentially create broader security implications within enterprise environments. When printer services become unstable due to this vulnerability, organizations face risks including unauthorized access to print queues, potential denial-of-service conditions that affect business operations, and possible escalation to more severe system compromise scenarios. The vulnerability's exploitation can result in printers becoming unresponsive to legitimate commands while remaining accessible to malicious actors who can manipulate the device's behavior through crafted input sequences. This creates a persistent threat vector that can undermine the reliability of document processing infrastructure.
From an adversarial perspective, this vulnerability maps to several ATT&CK techniques including T1210 - Exploitation of Remote Services and T1072 - Software Deployment Tools, as attackers can leverage the misinterpretation to gain unauthorized control over printer functions. The vulnerability's nature makes it particularly attractive for attackers seeking to establish persistent access points within network environments, as printers are often less protected than primary computing systems and frequently maintain network connectivity. Organizations should consider implementing network segmentation strategies to limit access to printer services and deploy robust input validation mechanisms at network boundaries to prevent exploitation attempts.
Mitigation strategies should focus on firmware updates provided by Huawei, which typically address the root cause by implementing proper input validation routines and enhancing data sanitization processes. Network administrators should also implement monitoring solutions that can detect anomalous printer behavior patterns, as these may indicate exploitation attempts. Additional protective measures include restricting network access to printer services, implementing printer-specific firewall rules, and conducting regular vulnerability assessments of printer firmware to identify potential weaknesses before exploitation. The remediation process requires careful attention to ensure that firmware updates do not introduce compatibility issues with existing print environments while effectively addressing the core input validation flaw.