free-internet-dns

GHSA-xqjj-x4p3-h2r4

Malicious code in free-internet-dns (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (80f5bbcb50f9c9699a083711bb4d59905b49a198ddcd8c95425030d01d6a45e5)
Installing the package installs a backdoor (a qsocket.io) and automatically uploads access credentials (from the output of the qsocket client) to the remote server.


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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2025-05-free-internet-dns


Reasons (based on the campaign):


 - backdoor


 - The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/free-internet-dns/MAL-2025-4219.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/free-internet-dns
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/free-internet-dns/MAL-2025-4219.json
- https://github.com/advisories/GHSA-xqjj-x4p3-h2r4

Compromised versions (1)

= 0.1.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.