Malware in buffer-utilities
Malware was discovered in the npm package buffer-utilities, resulting in full system compromise for any installation. The package should be removed immediately and all secrets and keys rotated from a clean system.
- Disclosed
- Last updated
- Blast radius
- Any system with buffer-utilities installed or running
- Ecosystems
- Attack vectors
- Affected entities
- buffer-utilities
A critical malware incident was identified in the npm package buffer-utilities. According to the GitHub Security Advisory (GHSA-67mv-3xg7-3726), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends immediate action: all secrets and keys stored on affected computers should be rotated from a different, uncompromised system. While the package should be removed, the advisory notes that full control of the computer may have been given to an outside entity, meaning removal of the package alone may not eliminate all malicious software that resulted from the installation.\n\nThis represents a severe supply chain attack through package compromise, affecting all users of the buffer-utilities npm package.
Indicators of compromise
- Packages
- buffer-utilities
Remediation
- Remove the buffer-utilities package immediately from all systems
- Rotate all secrets, API keys, and credentials from a clean, uncompromised computer
- Perform a full security audit and malware scan of all affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected systems as potentially fully compromised and plan for complete rebuild if critical infrastructure
Sources
- GitHub Advisory GHSA-67mv-3xg7-3726 · GitHub Advisory Database
Cite this entry
"Malware in buffer-utilities." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 9, 2026; last updated June 9, 2026. https://supplychainattack.org/incident/malware-in-buffer-utilities-hmqvb8
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