Vulnerability Description
pdm is a Python package and dependency manager supporting the latest PEP standards. It's possible to craft a malicious `pdm.lock` file that could allow e.g. an insider or a malicious open source project to appear to depend on a trusted PyPI project, but actually install another project. A project `foo` can be targeted by creating the project `foo-2` and uploading the file `foo-2-2.tar.gz` to pypi.org. PyPI will see this as project `foo-2` version `2`, while PDM will see this as project `foo` version `2-2`. The version must only be `parseable as a version` and the filename must be a prefix of the project name, but it's not verified to match the version being installed. Version `2-2` is also not a valid normalized version per PEP 440. Matching the project name exactly (not just prefix) would fix the issue. When installing dependencies with PDM, what's actually installed could differ from what's listed in `pyproject.toml` (including arbitrary code execution on install). It could also be used for downgrade attacks by only changing the version. This issue has been addressed in commit `6853e2642df` which is included in release version `2.9.4`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Frostming | Pdm | >= 2.0.0, < 2.10.0 |
| Frostming | Unearth | < 0.11.2 |
Related Weaknesses (CWE)
References
- https://github.com/frostming/unearth/blob/eca170d9370ac5032f2e497ee9b1b63823d3feProduct
- https://github.com/pdm-project/pdm/blob/45d1dfa47d4900c14a31b9bb761e4c46eb5c9442Product
- https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d848PatchVendor Advisory
- https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9ExploitVendor Advisory
- https://peps.python.org/pep-0440/#post-release-spellingNot Applicable
- https://github.com/frostming/unearth/blob/eca170d9370ac5032f2e497ee9b1b63823d3feProduct
- https://github.com/pdm-project/pdm/blob/45d1dfa47d4900c14a31b9bb761e4c46eb5c9442Product
- https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d848PatchVendor Advisory
- https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9ExploitVendor Advisory
- https://peps.python.org/pep-0440/#post-release-spellingNot Applicable
FAQ
What is CVE-2023-45805?
CVE-2023-45805 is a vulnerability with a CVSS score of 7.8 (HIGH). pdm is a Python package and dependency manager supporting the latest PEP standards. It's possible to craft a malicious `pdm.lock` file that could allow e.g. an insider or a malicious open source proje...
How severe is CVE-2023-45805?
CVE-2023-45805 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-45805?
Check the references section above for vendor advisories and patch information. Affected products include: Frostming Pdm, Frostming Unearth.