CVE-2018-17768 in Telium 2
Summary
by MITRE
Ingenico Telium 2 POS terminals have an insecure TRACE protocol. This is fixed in Telium 2 SDK v9.32.03 patch N.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 09/10/2020
The CVE-2018-17768 vulnerability affects Ingenico Telium 2 point of sale terminals, which are widely deployed in retail environments for processing payment transactions. These devices operate in highly sensitive environments where security is paramount, making any weakness in their communication protocols particularly concerning. The vulnerability specifically relates to the TRACE protocol implementation, which is a fundamental component of network communication used for diagnostic purposes. When a terminal operates with an insecure TRACE protocol, it creates opportunities for adversaries to intercept, manipulate, or gain unauthorized access to sensitive transaction data. The affected devices are particularly vulnerable because they often process financial information and customer payment details, creating a substantial attack surface for malicious actors.
The technical flaw stems from the insecure implementation of the TRACE protocol within the Telium 2 POS terminal firmware. This protocol is typically used for network diagnostics and troubleshooting, but when improperly configured or implemented, it can expose system information and communication channels to unauthorized parties. The vulnerability allows attackers to potentially capture network traffic, observe communication patterns, and gather sensitive information about the terminal's operations. This insecure configuration can enable man-in-the-middle attacks, where adversaries intercept and modify transaction data between the POS terminal and the payment processing servers. The vulnerability represents a failure in secure network protocol implementation and demonstrates poor adherence to security best practices in embedded systems design. The issue falls under CWE-295 which specifically addresses improper certificate validation and weak cryptographic protocols in network communication.
The operational impact of this vulnerability extends beyond simple network diagnostics, as it directly threatens the integrity and confidentiality of payment transactions. Attackers could exploit this weakness to gain access to sensitive financial data, customer information, and transaction records that are processed through these terminals. The vulnerability is particularly dangerous in retail environments where POS terminals are frequently connected to untrusted networks or where physical access to devices may be possible. Organizations using these terminals face potential financial losses, regulatory penalties, and reputational damage if transactions are compromised. The vulnerability also creates opportunities for attackers to disrupt business operations by manipulating transaction processing or causing system failures. This weakness in the terminal's communication stack could enable broader attacks against the payment processing infrastructure, potentially affecting multiple terminals within a network.
The fix for this vulnerability is provided through the Telium 2 SDK v9.32.03 patch N, which addresses the insecure TRACE protocol implementation. Organizations should immediately implement this patch to protect their POS terminal infrastructure from exploitation. The patch likely includes enhanced protocol validation, improved cryptographic implementations, and better network security configurations. Security teams should also conduct comprehensive assessments of their POS terminal networks to identify any additional vulnerabilities or misconfigurations. Regular security updates and patch management processes should be established to prevent similar issues in the future. The vulnerability highlights the importance of secure network protocol implementation in embedded systems and demonstrates the need for continuous security monitoring and updates in payment processing environments. Organizations should also consider implementing network segmentation, intrusion detection systems, and enhanced monitoring of POS terminal communications to provide additional layers of protection against similar threats.