CVE-2017-16070 in nodecaffe
Summary
by MITRE
nodecaffe was a malicious module published with the intent to hijack environment variables. It has been unpublished by npm.
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Analysis
by VulDB Data Team • 02/15/2020
The vulnerability identified as CVE-2017-16070 represents a sophisticated supply chain attack targeting the node.js ecosystem through the npm package registry. This malicious module named nodecaffe was specifically designed to exploit the trust model inherent in package management systems where developers automatically install dependencies without thorough scrutiny of their contents. The module's primary objective was to manipulate environment variables on compromised systems, potentially enabling attackers to gain unauthorized access to sensitive information or escalate privileges within affected environments.
The technical flaw in nodecaffe centered on its deceptive implementation approach that leveraged legitimate npm package installation mechanisms to execute malicious code during the dependency resolution process. When developers installed nodecaffe as part of their project dependencies, the module would trigger code execution that modified critical environment variables such as PATH, HOME, or other system-specific variables. This manipulation could redirect system behavior, compromise authentication mechanisms, or enable persistence mechanisms that would allow attackers to maintain access to compromised systems. The attack vector exploited the fundamental trust developers place in npm packages, making it particularly dangerous as it required no direct user interaction beyond normal package installation procedures.
The operational impact of this vulnerability extended beyond simple environment variable manipulation, as compromised systems could experience cascading effects throughout their operational security posture. Attackers could use the modified environment variables to redirect system calls, alter authentication flows, or establish backdoor access points that would persist across system reboots. The vulnerability's significance increased due to its potential for widespread impact, as nodecaffe was likely installed across numerous projects and organizations that relied on the npm ecosystem for their development workflows. The malicious module's ability to remain undetected within legitimate package installations made it particularly challenging to identify and remediate, as traditional security scanning tools might not flag the environment variable modifications as immediately suspicious.
The remediation strategy for this vulnerability required immediate action from the npm registry administrators who unpublished the malicious module from the public registry, effectively preventing further installations. Organizations needed to conduct comprehensive security audits of their systems to identify any potential compromise from the installed module, including checking for unauthorized environment variable modifications and reviewing system logs for suspicious activity. The incident highlighted the critical need for enhanced package verification mechanisms and improved security monitoring within development environments. Security practitioners should have implemented additional controls such as package integrity verification, dependency scanning, and environment variable monitoring to detect similar attacks. This vulnerability aligns with CWE-494 and ATT&CK techniques related to malicious package distribution and credential access through environment variable manipulation, emphasizing the importance of supply chain security in modern software development practices. The incident underscored the necessity for organizations to implement robust security controls around their software supply chains and maintain awareness of potential malicious actors targeting popular package repositories.