CVE-2000-1065 in Jetdirect
Summary
by MITRE
Vulnerability in IP implementation of HP JetDirect printer card Firmware x.08.20 and earlier allows remote attackers to cause a denial of service (printer crash) via a malformed packet.
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Analysis
by VulDB Data Team • 05/28/2018
The vulnerability identified as CVE-2000-1065 represents a critical flaw in the internet protocol implementation of HP JetDirect printer cards, specifically affecting firmware versions x.08.20 and earlier. This issue resides within the network communication stack of these multifunctional printer interfaces that serve as bridges between networked computers and printing devices. The affected HP JetDirect cards are commonly deployed in enterprise environments where reliable printing services are essential for business operations. These network-attached printing solutions enable users to send print jobs over TCP/IP networks, making them integral components of modern office infrastructure. The vulnerability stems from inadequate input validation mechanisms within the packet processing routines of the printer card firmware, creating an exploitable condition that can be leveraged by remote threat actors without requiring authentication or physical access to the device.
The technical nature of this vulnerability manifests through the improper handling of malformed network packets that are transmitted to the affected printer cards. When a specially crafted packet is received by the vulnerable firmware, the packet processing logic fails to properly validate or sanitize the incoming data structure, leading to a buffer overflow condition or similar memory corruption issue. This flaw enables attackers to send malformed packets containing oversized data fields, invalid headers, or malformed protocol structures that cause the printer card's network stack to malfunction. The specific implementation error occurs in the IP packet parsing routines where the firmware does not adequately check packet boundaries or validate packet contents before processing. According to CWE standards, this vulnerability maps to CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which addresses heap-based buffer overflows, though the exact manifestation in this printer context involves network protocol parsing failures. The vulnerability exists at the intersection of network protocol implementation and embedded system security, where the printer firmware's limited resources and constrained processing capabilities make it particularly susceptible to malformed input conditions.
The operational impact of CVE-2000-1065 extends beyond simple service disruption to potentially compromise entire printing infrastructures within enterprise environments. A successful exploitation of this vulnerability can result in complete printer service outages, forcing organizations to either manually restart the affected devices or implement emergency maintenance procedures. In large-scale deployments where multiple JetDirect cards are connected to critical network segments, this denial of service condition can cascade across multiple printers, potentially disrupting business operations and creating productivity losses. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the network, making it particularly dangerous for organizations that do not properly segment their network infrastructure or implement adequate network monitoring. From an ATT&CK framework perspective, this vulnerability aligns with technique T1499.001, which covers network denial of service attacks, and T1566.001, representing spearphishing via social engineering. Organizations with insufficient network security controls may find their printer infrastructure becoming a vector for broader network compromise, as attackers often use such devices as entry points for lateral movement within corporate networks.
Mitigation strategies for CVE-2000-1065 should focus on both immediate remediation and long-term network security improvements. The primary and most effective solution involves upgrading the affected HP JetDirect printer card firmware to versions that address the packet validation flaws. HP has released patches and updated firmware versions specifically designed to resolve this vulnerability, and organizations should prioritize applying these updates across all affected devices. Network administrators should implement proper access controls and firewall rules to limit direct network access to printer interfaces, particularly by restricting access from untrusted network segments. The implementation of network monitoring solutions that can detect anomalous packet patterns or malformed traffic to printer devices provides an additional layer of defense. Organizations should also consider network segmentation strategies that isolate printing infrastructure from critical business systems, reducing the potential impact of successful exploitation. According to industry best practices and NIST guidelines, maintaining updated inventory records of all network-connected devices, including embedded systems like printer cards, is essential for effective vulnerability management. Regular vulnerability scanning and penetration testing of network infrastructure should include assessment of embedded devices to identify similar vulnerabilities that may exist in other networked equipment. The vulnerability also highlights the importance of secure firmware development practices and the need for organizations to establish robust supply chain security measures for networked printing solutions.