Most recent entries from all

CVE-2023-49297 — Unsafe YAML deserialization in PyDrive2

Affected: iterative PyDrive2

PyDrive2 is a wrapper library of google-api-python-client that simplifies many common Google Drive API V2 tasks. Unsafe YAML deserilization will result in arbitrary code execution. A maliciously crafted YAML file can cause arbitrary code execution if PyDrive2 is run in the same directory as it, or if it is loaded in via `LoadSettingsFile`. This is a deserilization attack that will affect any user who initializes GoogleAuth from this package while a malicious yaml file is present in the same directory. This vulnerability does not require the file to be directly loaded through the code, only present. This issue has been addressed in commit `c57355dc` which is included in release version `1.16.2`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

GHSA-v5f6-hjmf-9mc5 — PyDrive2's unsafe YAML deserialization in LoadSettingsFile allows arbitrary code execution

Affected: PyPI: PyDrive2

### Summary Unsafe YAML deserilization will result in arbitrary code execution. A maliciously crafted YAML file can cause arbitrary code execution if PyDrive2 is run in the same directory as it, or if it is loaded in via `LoadSettingsFile`.

### Details The loader being imported from the `yaml` library is `CLoader`: https://github.com/iterative/PyDrive2/blob/30c0f487c0666c0d1944ef774107359f39adc2fa/pydrive2/settings.py#L5

This loader is then used to load a user supplied file: https://github.com/iterative/PyDrive2/blob/30c0f487c0666c0d1944ef774107359f39adc2fa/pydrive2/settings.py#L108-L121

CLoader is considered unsafe. It will allow any Python code inside of it to be executed. This loading behaviour also happens automatically, the file only needs to be present for this vulnerability to occur.

https://github.com/iterative/PyDrive2/blob/30c0f487c0666c0d1944ef774107359f39adc2fa/pydrive2/settings.py#L9

Reference: https://www.exploit-db.com/docs/english/47655-yaml-deserialization-attack-in-python.pdf

### PoC 1. Create a malicious `settings.yaml` file:

```yaml !!python/object/new:os.system [echo poc] ``` 2. Initialize a `GoogleAuth` object . ```python from pydrive2.auth import GoogleAuth

gauth = GoogleAuth() ``` 3. Execute the code with the settings file present in your directory. The code inside the file will be executed: ``` [evan@ejedev PyDrive2]$ ls CHANGES client_secrets.json CONTRIBUTING.rst docs examples LICENSE main.py MANIFEST.in pydrive2 pyproject.toml py…

PYSEC-2023-291

Affected: PyPI: pydrive2