CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
5.1%
A PyInstaller built application, elevated as a privileged process, may be tricked by an unprivileged attacker into deleting files the unprivileged user does not otherwise have access to.
A user is affected if all the following are satisfied:
matplotlib
or win32com
.TMP
/TEMP
environment variables pointing to an unprotected, arbitrary, non default location).shutil.rmtree()
's builtin symlink check and the deletion itselfThe vulnerability has been addressed in https://github.com/pyinstaller/pyinstaller/pull/7827 which corresponds to pyinstaller >= 5.13.1
Is there a way for users to fix or remediate the vulnerability without upgrading?
No workaround, although the attack complexity becomes much higher if the application is built with Python >= 3.8.0.
github.com/pyinstaller/pyinstaller
github.com/pyinstaller/pyinstaller/pull/7827
github.com/pyinstaller/pyinstaller/security/advisories/GHSA-9w2p-rh8c-v9g5
github.com/python/cpython/blob/0fb18b02c8ad56299d6a2910be0bab8ad601ef24/Lib/shutil.py#L623
lists.fedoraproject.org/archives/list/[email protected]/message/2K2XIQLEMZIKUQUOWNDYWTEWYQTKMAN7
lists.fedoraproject.org/archives/list/[email protected]/message/ISRWT34FAF23PUOLVZ7RVWBZMWPDR5U7
nvd.nist.gov/vuln/detail/CVE-2023-49797