Highlights
The JavaScript ecosystem is under a massive threat following a major supply chain attack. Hence, millions of crypto users and developers are now at risk. With more than a billion of these packages downloaded already, thousands of blockchain wallets and applications could be suffer varying exploits.
Ledger CTO Charles Guillemet warned that a compromised Node Package Manager (NPM) account has led to malicious updates in widely used packages, including error-ex, color-convert, and strip-ansi. Security researchers discovered that the injected malware functions as a “crypto-clipper.” It silently hijacks wallet addresses in network requests and replaces them with addresses controlled by the attacker.
The supply chain attack activates whether or not a crypto wallet is detected. If a wallet such as MetaMask is present, the malware directly intercepts and manipulates transaction requests. It scans data for wallet addresses in Bitcoin, Ethereum, Solana, Tron, Litecoin, and other networks.
These are replaced with similar-looking attacker addresses using a string-matching algorithm. The deception makes it difficult for victims to notice changes. Recently, World Liberty Financial disclosed why it blacklisted 272 wallets, highlighting broader risks facing wallet security.
Developers first spotted the malicious code from the supply chain attack after a cryptic build failure during a pipeline run. Instead of the stable version 1.3.2, their systems installed a newly published 1.3.3 version of error-ex. That release contained heavily obfuscated code, including a suspicious function named checkethereumw. Investigation confirmed it was stealing crypto data and redirecting funds.
Guillemet urged caution. He advised users with hardware wallets to carefully check each transaction before signing. For those without hardware protection, he recommended pausing all on-chain transactions until the threat is resolved. He added that it remains unclear whether attackers can directly steal wallet seed phrases from software wallets.
New revelations, including a report by Arkham about the 127,426 Bitcoin hack on the Lubian mining pool, highlights the possible extent of exploits, including a supply chain attack. Despite mounting fears, Solana’s top DEX-aggregator Jupiter said it is unaffected. The team said Jupiter and Jup Mobile do not use compromised package versions. They added that they’ve reviewed the source code and assured users their products are safe.
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