CVE-2023-41040

描述

GitPython is a python library used to interact with Git repositories. In order to resolve some git references, GitPython reads files from the `.git` directory, in some places the name of the file being read is provided by the user, GitPython doesn't check if this file is located outside the `.git` directory. This allows an attacker to make GitPython read any file from the system. This vulnerability is present in https://github.com/gitpython-developers/GitPython/blob/1c8310d7cae144f74a671cbe17e51f63a830adbf/git/refs/symbolic.py#L174-L175. That code joins the base directory with a user given string without checking if the final path is located outside the base directory. This vulnerability cannot be used to read the contents of files but could in theory be used to trigger a denial of service for the program. This issue has been addressed in version 3.1.37.

如何修補 CVE-2023-41040

要修補 CVE-2023-41040,請將受影響套件升級到下列已修補版本。

• —升級至 3.1.14-1+deb11u1 或更新版本
• —升級至 2.1.11-1+deb10u2 或更新版本
• —升級至 3.1.37 或更新版本
• —升級至 3.1.35 或更新版本

CVE-2023-41040 正在被利用嗎?

低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。

受影響套件(4)

• from 0, < 3.1.14-1+deb11u1
• from 0, < 2.1.11-1+deb10u2
• from 0, < 3.1.37
• from 0, < 3.1.35

CVSS 分數

參考連結(12)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-41040
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-41040
• PATCHgithub.com/gitpython-developers/GitPython
• WEBgithub.com/gitpython-developers/GitPython/blob/1c8310d7cae144f74a671cbe17e51f63a830adbf/git/refs/symbolic.py#L174-L175