CVE-2014-7891 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 OPOSPOSKeyboard.ocx for POS keyboards and POS keyboards with MSR, aka ZDI-CAN-2509.
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Analysis
by VulDB Data Team • 05/17/2022
The vulnerability identified as CVE-2014-7891 represents a critical remote code execution flaw within the OLE Point of Sale drivers on HP Point of Sale Windows systems. This vulnerability specifically affects versions prior to 1.13.003 and impacts the OPOSPOSKeyboard.ocx component used for POS keyboard operations and keyboards equipped with magnetic stripe readers. The flaw exists in the way these drivers handle input processing and communication with keyboard devices, creating a pathway for malicious actors to inject and execute arbitrary code on affected systems.
The technical nature of this vulnerability stems from improper input validation and memory handling within the OPOS driver components, particularly the OPOSPOSKeyboard.ocx module. When POS keyboards with MSR capabilities communicate with the system through these vulnerable drivers, the input data is not adequately sanitized or validated before processing. This allows attackers to craft specially formatted input sequences that can trigger buffer overflows or other memory corruption conditions within the driver code. The vulnerability is classified under CWE-121, which describes heap-based buffer overflow conditions, and represents a classic example of how device drivers can serve as attack vectors due to their privileged execution context and direct hardware interaction capabilities.
From an operational perspective, this vulnerability poses significant risks to retail and hospitality environments where HP Point of Sale systems are deployed. Attackers can exploit this flaw remotely to gain full control over affected systems, potentially leading to data theft, system compromise, and disruption of business operations. The attack surface is particularly concerning because POS systems often process sensitive financial data and are typically connected to corporate networks, making them attractive targets for attackers seeking lateral movement. This vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as attackers could leverage the remote code execution capability to establish persistent access and deploy additional malicious payloads.
The impact extends beyond immediate system compromise to include potential data breaches involving sensitive customer information such as credit card details, personal identification numbers, and other financial data processed through these POS systems. Organizations using affected HP Point of Sale hardware are particularly vulnerable since these systems often operate in untrusted network environments and may lack proper network segmentation. The vulnerability demonstrates the critical importance of keeping device drivers updated, as the flaw was resolved through version 1.13.003 of the OPOS drivers. Mitigation strategies should include immediate patch deployment, network monitoring for suspicious activity, and implementation of additional security controls such as application whitelisting to prevent unauthorized code execution. Organizations should also consider conducting vulnerability assessments to identify all affected systems and ensure proper patch management processes are in place to prevent similar issues in other device drivers and system components.