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ohcm-culture-formatting@5.0.0 declares a preinstall hook ("preinstall": "node index.js") that auto-executes on npm install. index.js uses child_process.exec to run a shell pipeline that reads /etc/passwd, /etc/hosts, /etc/shadow, and id output, base64-encodes the concatenation, and POSTs it via curl to http://d98fu4tmls2g936th9qgfxje1qj9g91a6.oast.fun/ohcm-culture-formatting/$(whoami)/$(hostname)/, embedding the installer's username and hostname in the URL path and the file contents in the User-Agent header. The destination is an Interactsh/OAST out-of-band interaction collector. The package name mimics an internal ADP/Lifion (ohcm-*) namespace and the description string is Lifion host, consistent with a dependency-confusion payload targeting that internal namespace.
5.0.0Exploitability
AV:NAC:LPR:NUI:NScope
S:CImpact
C:HI:HA:H10.0/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H