Potential remote code execution in PyPI
Preface
(日本語版も公開されています。)
While PyPI has a security page, they don’t have a clear policy for vulnerability assessments.1
This article describes the vulnerabilities that were reported as potential vulnerabilities, using publicly available information. This was done without actually exploiting / demonstrating the vulnerabilities.
This article is not intended to encourage you to perform an unauthorized vulnerability assessment.
If you find any vulnerabilities in PyPI, please report them to security@python.org.2
TL;DR
There was a vulnerability in GitHub Actions of PyPI’s repository, which allowed a malicious pull request to execute an arbitrary command.
This allows an attacker to obtain write permission against the repository, which could lead to arbitrary code execution on pypi.org.