CVE-2023-45805
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2023-45805 NameCVE-2023-45805 Descriptionpdm 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`…
Workaround
s for this vulnerability. SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) Debian Bugs1054428 Vulnerable and fixed packages The table below lists information on source packages. Source PackageReleaseVersionStatus pdm (PTS)bookworm2.2.1+ds1-1vulnerable trixie2.20.1+ds1-2fixed forky, sid2.27.0-1fixed The information below is based on the following data on fixed versions. PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs pdmsource(unstable)2.20.0.post1+ds1-11054428 Notes [bookworm] - pdm <no-dsa> (Minor issue) https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9 https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d84831 (2.10.0)
CVE-2023-45805
| Name | CVE-2023-45805 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1054428 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pdm (PTS) | bookworm | 2.2.1+ds1-1 | vulnerable |
| trixie | 2.20.1+ds1-2 | fixed | |
| forky, sid | 2.27.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pdm | source | (unstable) | 2.20.0.post1+ds1-1 | 1054428 |
Notes
[bookworm] - pdm <no-dsa> (Minor issue)
https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9
https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d84831 (2.10.0)
Apply commands
[bookworm] - pdm <no-dsa> (Minor issue)https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d84831 (2.10.0)OS impact
Debian Mixed 4 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.20.0.post1+ds1-1 |
| sid | Fixed | 2.20.0.post1+ds1-1 |
| forky | Fixed | 2.20.0.post1+ds1-1 |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | pdm | <=2.9.3 | |
References
- https://github.com/pdm-project/pdm/security/advisories/GHSA-j44v-mmf2-xvm9
- https://nvd.nist.gov/vuln/detail/CVE-2023-45805
- https://github.com/pdm-project/pdm/commit/6853e2642dfa281d4a9958fbc6c95b7e32d84831
- https://github.com/frostming/unearth/blob/eca170d9370ac5032f2e497ee9b1b63823d3fe0f/src/unearth/evaluator.py#L215-L229
- https://github.com/pdm-project/pdm
- https://github.com/pdm-project/pdm/blob/45d1dfa47d4900c14a31b9bb761e4c46eb5c9442/src/pdm/models/candidates.py#L98-L99
- https://peps.python.org/pep-0440/#post-release-spelling
- https://security-tracker.debian.org/tracker/CVE-2023-45805
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.