CVE-2014-7888 in OLE Point of Sale Driver
Summary
by MITRE
The OLE Point of Sale (OPOS) drivers before 1.13.003 on HP Point of Sale Windows PCs allow remote attackers to execute arbitrary code via vectors involving OPOSMICR.ocx for PUSB Thermal Receipt printers, SerialUSB Thermal Receipt printers, Hybrid POS printers with MICR, Value PUSB Receipt printers, and Value Serial/USB Receipt printers, aka ZDI-CAN-2512.
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Analysis
by VulDB Data Team • 05/17/2022
The vulnerability described in CVE-2014-7888 represents a critical remote code execution flaw affecting HP Point of Sale systems that utilize OLE Point of Sale (OPOS) drivers version 1.13.003 and earlier. This issue specifically targets the OPOSMICR.ocx component, which serves as a dynamic link library responsible for handling MICR (Magnetic Ink Character Recognition) functionality in various thermal receipt printer models. The affected hardware includes PUSB Thermal Receipt printers, SerialUSB Thermal Receipt printers, Hybrid POS printers with MICR capabilities, Value PUSB Receipt printers, and Value Serial/USB Receipt printers, creating a broad attack surface across multiple printer configurations used in retail and hospitality environments.
The technical exploitation mechanism leverages a buffer overflow vulnerability within the OPOSMICR.ocx ActiveX control, which fails to properly validate input parameters when processing printer commands. When remote attackers send specially crafted malicious data to the vulnerable OPOS driver, the malformed input causes the application to write beyond allocated memory boundaries, resulting in arbitrary code execution with the privileges of the compromised process. This vulnerability operates at the kernel level within the Windows operating system, allowing attackers to escalate privileges and gain complete control over the affected POS system. The flaw stems from inadequate bounds checking and memory management practices within the printer driver component, creating a pathway for attackers to bypass standard security controls and execute malicious payloads directly on the target system.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with persistent access to critical retail infrastructure. Compromised POS systems become potential entry points for broader network infiltration, allowing attackers to harvest sensitive customer data including credit card information, personal identification numbers, and transaction records. The vulnerability's remote exploitability means that attackers can target these systems from anywhere on the internet without requiring physical access or local network presence, making it particularly dangerous for organizations with distributed retail operations. Additionally, the widespread deployment of affected HP POS systems across various industries including banking, healthcare, and retail creates a significant risk for coordinated attacks targeting multiple organizations simultaneously. The vulnerability directly maps to CWE-121, which describes heap-based buffer overflow conditions, and aligns with ATT&CK technique T1059.007 for execution through Windows Command Shell, providing attackers with multiple vectors for post-exploitation activities.
Organizations should implement immediate mitigations including disabling unnecessary ActiveX controls, applying the vendor-provided security patches, and implementing network segmentation to isolate POS systems from critical corporate networks. System administrators should also deploy network monitoring solutions to detect anomalous printer communication patterns and establish strict access controls for POS system administration. The vulnerability demonstrates the importance of secure coding practices and proper input validation, particularly for components that handle external data inputs. Organizations should conduct comprehensive vulnerability assessments of their POS infrastructure and implement regular security updates as part of their overall cybersecurity program. Additionally, the incident highlights the need for continuous monitoring of third-party software components and the implementation of secure development lifecycle practices to prevent similar vulnerabilities from being introduced in future releases.