CVE-2017-16003 in windows-build-tools
Summary
by MITRE
windows-build-tools is a module for installing C++ Build Tools for Windows using npm. windows-build-tools versions below 1.0.0 download 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 resources with an attacker controlled copy 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 • 03/17/2023
The vulnerability identified as CVE-2017-16003 affects the windows-build-tools npm module, which serves as a utility for installing Microsoft C++ Build Tools on Windows systems through node package manager. This module operates by downloading necessary resources from remote servers to facilitate the build tool installation process. The security flaw stems from the module's implementation of unencrypted HTTP connections for all resource downloads, creating a significant attack surface that exposes users to man-in-the-middle threats. The vulnerability specifically impacts versions prior to 1.0.0, indicating that this was a known issue that was subsequently addressed in the module's development lifecycle.
The technical implementation of this vulnerability involves the module's reliance on HTTP protocol for resource retrieval rather than secure HTTPS connections. When users execute the windows-build-tools module, it establishes HTTP connections to download various components including build tools, dependencies, and configuration files. This unencrypted communication channel provides attackers with opportunities to intercept and modify network traffic between the user's system and the remote servers hosting the legitimate resources. The flaw creates a scenario where an attacker positioned within the network path or capable of performing network interception can replace legitimate files with malicious copies without detection, as the download process lacks any integrity verification mechanisms.
The operational impact of this vulnerability extends beyond simple data interception, as it potentially enables remote code execution capabilities for attackers who successfully exploit the man-in-the-middle position. By swapping out legitimate build tool components with attacker-controlled versions, an adversary could inject malicious code that would execute during the build process or when the tools are subsequently used. This presents a significant risk to development environments where build tools are frequently installed and updated, as the attack could compromise the entire development pipeline. The vulnerability particularly affects organizations that rely on automated deployment processes or continuous integration systems where windows-build-tools might be invoked without proper security controls in place.
Security professionals should recognize this vulnerability as aligning with CWE-319, which addresses the exposure of sensitive information through improper network communication. The issue also maps to ATT&CK technique T1059.001, involving command and scripting interpreter execution, as the malicious code injection could occur through compromised build tool execution paths. Mitigation strategies should include immediate upgrading to windows-build-tools version 1.0.0 or later, which implements secure HTTPS connections for all resource downloads. Organizations should also consider implementing network monitoring solutions to detect unusual traffic patterns and ensure that all npm package installations occur over encrypted channels. Additionally, security teams should establish policies requiring verification of package integrity through checksums or digital signatures, particularly for critical build tool installations that may be targeted by adversaries seeking to compromise development environments.