CVE-2016-10638 in js-given
Summary
by MITRE
js-given is a JavaScript frontend to jgiven. js-given downloads binary resources over HTTP, which leaves it vulnerable to MITM attacks. It may be possible to cause remote code execution (RCE) by swapping out the requested binary with an attacker controlled binary if the attacker is on the network or positioned in between the user and the remote server.
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Analysis
by VulDB Data Team • 02/14/2020
The vulnerability identified as CVE-2016-10638 affects js-given, a JavaScript frontend library that interfaces with jgiven for test automation purposes. This tool facilitates the download of binary resources through unencrypted HTTP connections, creating a fundamental security flaw that exposes users to significant risks. The primary concern stems from the lack of secure transport mechanisms during the binary download process, which creates an attack surface that adversaries can exploit to compromise system integrity.
The technical flaw resides in the implementation of insecure communication protocols within the js-given library. When the system attempts to download binary resources, it utilizes HTTP rather than HTTPS, which means all data transmitted between the client and remote servers travels in plaintext. This unencrypted communication channel allows attackers positioned within the network to intercept, modify, or replace the downloaded binaries with malicious alternatives. The vulnerability specifically manifests as a man-in-the-middle attack vector, where an attacker can exploit the absence of transport layer security to manipulate the download process.
The operational impact of this vulnerability extends beyond simple data interception, as it potentially enables remote code execution capabilities for attackers. When an attacker successfully replaces a legitimate binary with a malicious one, they can execute arbitrary code on the victim's system with the privileges of the user running the js-given tool. This represents a critical security risk that can lead to full system compromise, data exfiltration, or the establishment of persistent backdoors within the affected environment. The vulnerability affects any system where js-given is used for test automation or development workflows.
From a cybersecurity perspective, this vulnerability aligns with CWE-319, which specifically addresses the exposure of sensitive information through improper use of network protocols. The flaw also corresponds to ATT&CK technique T1059.007, which covers scripting through web shell or command execution via compromised tools. Organizations using js-given should immediately implement mitigations such as updating to versions that utilize HTTPS for binary downloads, implementing network monitoring to detect unusual traffic patterns, and ensuring that all binary downloads occur through secure channels with proper certificate validation. Additionally, network segmentation and intrusion detection systems can help identify and prevent man-in-the-middle attacks targeting this specific vulnerability. The remediation approach should prioritize the adoption of secure communication protocols and regular security assessments to prevent similar vulnerabilities in other components of the software supply chain.