Описание
PyDrive2's unsafe YAML deserialization in LoadSettingsFile allows arbitrary code execution
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.
Reference: https://www.exploit-db.com/docs/english/47655-yaml-deserialization-attack-in-python.pdf
PoC
- Create a malicious
settings.yamlfile:
- Initialize a
GoogleAuthobject .
- Execute the code with the settings file present in your directory. The code inside the file will be executed:
Alternatively, the file can be loaded in directly via pydrive2.settings.LoadSettingsFile
Impact
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. As it does not require it to be directly loaded through the code, only present, I believe this produces an extra element of risk.
Ссылки
- https://github.com/iterative/PyDrive2/security/advisories/GHSA-v5f6-hjmf-9mc5
- https://nvd.nist.gov/vuln/detail/CVE-2023-49297
- https://github.com/iterative/PyDrive2/commit/c57355dc2033ad90b7050d681b2c3ba548ff0004
- https://github.com/pypa/advisory-database/tree/main/vulns/pydrive2/PYSEC-2023-291.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CYR5SJKOFSSXFV3E3D2SLXBUBA5WMJJG
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K34YWTDKBAYWZPOAKBYDM72WIFL5CAYW
Пакеты
PyDrive2
= 1.17.0
Отсутствует
PyDrive2
< 1.16.2
1.16.2
Связанные уязвимости
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.
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.
PyDrive2 is a wrapper library of google-api-python-client that simplif ...