CVE-2023-40590

Aliases:GHSA-wfm5-v35h-vwf4PYSEC-2023-161
Advisory lineage Upstream: 0 Downstream: 2
Modified
Published: 28 Aug 2023, 17:24
Last modified:02 Oct 2024, 14:04

Vulnerability Summary

Overall Risk (default)
medium
41/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.5% LOW
1% probability +0.12%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

28 Aug 2023, 17:24
Published
Vulnerability first disclosed
02 Oct 2024, 14:04
Last Modified
Vulnerability information updated

Description

GitPython is a python library used to interact with Git repositories. When resolving a program, Python/Windows look for the current working directory, and after that the PATH environment. GitPython defaults to use the `git` command, if a user runs GitPython from a repo has a `git.exe` or `git` executable, that program will be run instead of the one in the user's `PATH`. This is more of a problem on how Python interacts with Windows systems, Linux and any other OS aren't affected by this. But probably people using GitPython usually run it from the CWD of a repo. An attacker can trick a user to download a repository with a malicious `git` executable, if the user runs/imports GitPython from that directory, it allows the attacker to run any arbitrary commands. There is no fix currently available for windows users, however there are a few mitigations. 1: Default to an absolute path for the git program on Windows, like `C:\\Program Files\\Git\\cmd\\git.EXE` (default git path installation). 2: Require users to set the `GIT_PYTHON_GIT_EXECUTABLE` environment variable on Windows systems. 3: Make this problem prominent in the documentation and advise users to never run GitPython from an untrusted repo, or set the `GIT_PYTHON_GIT_EXECUTABLE` env var to an absolute path. 4: Resolve the executable manually by only looking into the `PATH` environment variable.

CVSS Metrics

  • v4.0•HIGH•Score: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.50%• Percentile: 42%

Techniques & Countermeasures

  • CWE-426•Untrusted Search Path

    The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.

Affected Systems

  • gitpython_project•gitpython

    ≤ 3.1.32

  • gitpython-developers•gitpython

    ≤ 3.1.32

  • PyPI•gitpython

    < 3.1.33

References (9)