CVE-2023-45805 Trojan Lockfilein pdm
Attackers can craft malicious lockfiles to install unintended packages, leading to arbitrary code execution during dependency installation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-45805?
CVE-2023-45805 is a high-severity vulnerability in pdm-project pdm, published on 20 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2023-45805?
3 open source packages ship an affected version, including pdm. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
pdm PyPI | All versions to 2.9.3 | None |
pdm PyPI | All versions to 2.9.3 | None |
pdm PyPI | All versions | 2.10.0 |
Products include Frostming Pdm, Frostming Unearth.
How do I fix CVE-2023-45805?
Upgrade pdm to 2.10.0 or later.
Is CVE-2023-45805 being exploited?
There is no known exploitation of CVE-2023-45805 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2023-45805, GHSA-j44v-mmf2-xvm9, PYSEC-2026-1763, UBUNTU-CVE-2023-45805, openSUSE-SU-2024:13352-1.