CVE-2019-13165 in Phaser 3320
Summary
by MITRE
Some Xerox printers (such as the Phaser 3320 V53.006.16.000) were affected by a buffer overflow vulnerability in the request parser of the IPP service. This would allow an unauthenticated attacker to cause a Denial of Service (DoS) and potentially execute arbitrary code on the device.
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Analysis
by VulDB Data Team • 04/16/2024
The vulnerability identified as CVE-2019-13165 represents a critical buffer overflow flaw within the Internet Printing Protocol (IPP) service implementation of specific Xerox printer models including the Phaser 3320 with firmware version V53.006.16.000. This issue resides in the request parser component that processes incoming IPP requests from clients attempting to communicate with the printer's web interface or network services. The buffer overflow occurs when the parser fails to properly validate the length of incoming data structures, particularly in the handling of IPP request parameters that control various printer functions such as print job submission, status queries, and configuration modifications.
The technical exploitation of this vulnerability stems from the improper bounds checking within the IPP service's input validation mechanisms. When an attacker sends a malformed IPP request containing oversized data payloads, the parser attempts to copy this data into fixed-size buffers without adequate length verification. This condition creates a classic stack-based buffer overflow scenario where excess data overwrites adjacent memory locations, potentially corrupting program execution flow. The vulnerability is particularly concerning because it affects the IPP service which operates with elevated privileges and handles requests from potentially untrusted network sources. The weakness aligns with CWE-121, which describes stack-based buffer overflow conditions, and demonstrates how insufficient input validation can lead to memory corruption in network service implementations.
The operational impact of this vulnerability extends beyond simple denial of service to potentially enabling remote code execution on affected Xerox devices. An unauthenticated attacker who can send IPP requests to the affected printer's network interface can trigger the buffer overflow condition, causing the device to crash and restart or potentially allowing arbitrary code execution within the printer's execution environment. This presents a significant risk to enterprise printing environments where these devices often operate with network connectivity and may be accessible from untrusted network segments. The vulnerability affects the availability of critical printing services and could potentially provide attackers with persistent access points within the network infrastructure, especially if the printer is used to process sensitive documents or serves as a gateway for other network services.
Mitigation strategies for CVE-2019-13165 should prioritize immediate firmware updates from Xerox to address the buffer overflow in the IPP service parser. Organizations should implement network segmentation to restrict access to printer services and disable unnecessary IPP ports when not required for legitimate business operations. Network access control lists can be configured to limit IPP service access to trusted administrative workstations only. The implementation of network monitoring solutions can help detect anomalous IPP request patterns that may indicate exploitation attempts. Additionally, regular security assessments of networked printing devices should be conducted to identify similar vulnerabilities in other printer models and firmware versions. The vulnerability demonstrates the importance of secure coding practices in embedded network services and aligns with ATT&CK technique T1210 which covers exploitation of remote services, emphasizing the need for robust input validation and memory safety mechanisms in network-facing applications.