In what’s yet another instance of supply chain attack targeting open-source software repositories, two popular NPM packages with cumulative weekly downloads of nearly 22 million were found to be compromised with malicious code by gaining unauthorized access to the respective developer’s accounts.
The two libraries in question are “coa,” a parser for command-line options, and “rc,” a configuration loader, both of which were tampered by an unidentified threat actor to include “identical” password-stealing malware.
All versions of coa starting with 2.0.3 and above — 2.0.3, 2.0.4, 2.1.1, 2.1.3, 3.0.1, and 3.1.3 — are impacted, and users of the affected versions are advised to downgrade to 2.0.2 as soon as possible and check their systems for suspicious activity, according to a GitHub advisory published on November 4. In a similar vein, versions 1.2.9, 1.3.9, and 2.3.9 of rc have been found laced with malware, with an independent alert urging users to downgrade to version 1.2.8.
Additional analysis of the dropped malware samples show it be a DanaBot variant which is a Windows malware for stealing credentials and passwords, echoing two similar incidents from last month that resulted in the compromise of UAParser.js as well as the publishing of rogue, typosquatted Roblox NPM libraries.
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