CVE-2023-45805 — pdm is a Python package and dependency manager supporting the latest PEP standar

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 anot

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
pdm-project	pdm	>= 2.0.0,< 2.9.4

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-20T18:12:24.701Z
• Last modified: 2024-09-12T15:01:47.526Z

09References

• github.com — https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9
• github.com — https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d848…
• github.com — https://github.com/frostming/unearth/blob/eca170d9370ac5032f2e497ee9b1b63823d3fe…
• github.com — https://github.com/pdm-project/pdm/blob/45d1dfa47d4900c14a31b9bb761e4c46eb5c9442…
• peps.python.org — https://peps.python.org/pep-0440/#post-release-spelling