Description

A vulnerability has been found in the CPython `venv` module and CLI where path names provided when creating a virtual environment were not quoted properly, allowing the creator to inject commands into virtual environment "activation" scripts (ie "source venv/bin/activate"). This means that attacker-controlled virtual environments are able to run commands when the virtual environment is activated. Virtual environments which are not created by an attacker or which aren't activated before being used (ie "./venv/bin/python") are not affected.

Classification

CVE ID: CVE-2024-9287

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.3

Affected Products

Vendor: Python Software Foundation

Product: CPython

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 15.23% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://github.com/python/cpython/issues/124651
https://github.com/python/cpython/pull/124712
https://mail.python.org/archives/list/[email protected]/thread/RSPJ2B5JL22FG3TKUJ7D7DQ4N5JRRBZL/
https://github.com/python/cpython/commit/e52095a0c1005a87eed2276af7a1f2f66e2b6483
https://github.com/python/cpython/commit/633555735a023d3e4d92ba31da35b1205f9ecbd7
https://github.com/python/cpython/commit/8450b2482586857d689b6658f08de9c8179af7db
https://github.com/python/cpython/commit/9286ab3a107ea41bd3f3c3682ce2512692bdded8
https://github.com/python/cpython/commit/ae961ae94bf19c8f8c7fbea3d1c25cc55ce8ae97

Timeline