CVE-2017-16207 in discordi.js
Summary
by MITRE
discordi.js is a malicious module based on the discord.js library that exfiltrates login tokens to pastebin.
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Analysis
by VulDB Data Team • 02/16/2020
The vulnerability identified as CVE-2017-16207 represents a sophisticated supply chain attack targeting the popular discord.js JavaScript library ecosystem. This malicious module was designed to masquerade as legitimate software while secretly performing unauthorized data exfiltration operations. The attack leverages the trust model inherent in npm package management systems where developers install dependencies without fully examining their underlying code functionality. The malicious code specifically targets user authentication tokens that are essential for maintaining persistent access to Discord accounts, making this vulnerability particularly dangerous for users who rely on the library for bot development and automation tasks.
The technical flaw manifests through a carefully crafted backdoor implementation within the discordi.js module that operates silently in the background. When developers install and use this malicious package, it automatically captures authentication tokens from Discord sessions and transmits them to external pastebin services without user consent or knowledge. The implementation typically involves intercepting network requests made by legitimate discord.js applications and extracting sensitive authentication data from HTTP headers or API response payloads. This approach aligns with common attack patterns documented in the MITRE ATT&CK framework under the T1071.004 technique for application layer protocol tunneling and data exfiltration.
The operational impact of this vulnerability extends beyond simple credential theft, as it enables attackers to maintain persistent access to compromised user accounts and potentially escalate privileges within Discord communities. The exfiltration of login tokens allows threat actors to assume the identity of legitimate users, access private channels, send messages on behalf of victims, and potentially compromise entire server infrastructures. This vulnerability particularly affects developers who create Discord bots and automated applications, as they often store authentication credentials within their code or configuration files that the malicious module can access and transmit. The attack demonstrates how attackers can exploit the trust relationships within software development ecosystems to gain unauthorized access to sensitive user data.
Mitigation strategies for this vulnerability require comprehensive security practices that address both immediate remediation and long-term prevention measures. Organizations and developers should immediately audit their installed npm packages and remove any instances of the discordi.js module from their systems. Regular security scanning of npm dependencies using tools like npm audit or third-party vulnerability scanners can help identify potentially malicious packages before they can cause harm. The implementation of strict package verification processes including code review of third-party libraries, use of package integrity checks, and monitoring for unauthorized package modifications provides essential protection against similar supply chain attacks. Additionally, developers should adopt secure coding practices such as avoiding hard-coded credentials, implementing proper authentication token management, and regularly rotating access tokens to minimize the impact of credential compromise. This vulnerability highlights the importance of the principle of least privilege and demonstrates how attackers can leverage the trust model of package management systems to execute sophisticated attacks that bypass traditional security controls.