The 'cbr-internal-utils' npm package at version 2.2.2 includes malicious code that, upon loading, uses child_process.exec to run 'cat /etc/passwd' and outputs the contents to stdout. This occurs automatically when any consumer requires the package, with no user interaction needed. The package's internal-sounding name and empty author and description fields suggest it is designed for reconnaissance or dependency confusion attacks rather than legitimate use. The reading of /etc/passwd serves no functional purpose for a library and exposes local user account information on the host.

The malicious code exposes local user account information by reading and printing the /etc/passwd file on the host system. This can aid attackers in reconnaissance activities, potentially facilitating further attacks or privilege escalation. There is no indication of additional payloads or direct exploitation beyond information disclosure. No known exploits in the wild have been reported.

No official patch or remediation is currently available for this package version. Users should avoid using 'cbr-internal-utils' version 2.2.2 and remove it from their dependencies if present. Verify the integrity and provenance of npm packages before installation to prevent dependency confusion or supply chain attacks. Monitor for updates or advisories from the package maintainers or npm registry regarding this package.