CVE-2022-41953— Git clone remote code execution vulnerability in git-for-windows
Quick assessment
Affected
git-for-windows git
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Git是一套免费、开源的分布式版本控制系统。 Git GUI存在代码问题漏洞，该漏洞源于Tcl脚本在Windows上的危险设计，导致在查找可执行文件时的搜索路径始终包括当前目录。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2022-41953
Vulnerability Information
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Vulnerability Title
Git clone remote code execution vulnerability in git-for-windows
Source: CVE Program / CVE List V5
Vulnerability Description
Git GUI is a convenient graphical tool that comes with Git for Windows. Its target audience is users who are uncomfortable with using Git on the command-line. Git GUI has a function to clone repositories. Immediately after the local clone is available, Git GUI will automatically post-process it, among other things running a spell checker called `aspell.exe` if it was found. Git GUI is implemented as a Tcl/Tk script. Due to the unfortunate design of Tcl on Windows, the search path when looking for an executable _always includes the current directory_. Therefore, malicious repositories can ship with an `aspell.exe` in their top-level directory which is executed by Git GUI without giving the user a chance to inspect it first, i.e. running untrusted code. This issue has been addressed in version 2.39.1. Users are advised to upgrade. Users unable to upgrade should avoid using Git GUI for cloning. If that is not a viable option, at least avoid cloning from untrusted sources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可信的搜索路径
Source: CVE Program / CVE List V5
Vulnerability Title
Git 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Git是一套免费、开源的分布式版本控制系统。 Git GUI存在代码问题漏洞，该漏洞源于Tcl脚本在Windows上的危险设计，导致在查找可执行文件时的搜索路径始终包括当前目录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| git-for-windows | git | < 2.39.1 | - |
|
II. Public POCs for CVE-2022-41953
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-41953 (2)
-
https://github.com/git-for-windows/git/pull/4219 x_refsource_MISC
Vendor Advisories for CVE-2022-41953 (1)
-
https://github.com/git-for-windows/git/security/advisories/GHSA-v4px-mx59-w99c x_refsource_CONFIRM
Other References for CVE-2022-41953 (1)
-
https://www.tcl.tk/man/tcl8.6/TclCmd/exec.html#M23 x_refsource_MISC
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V. Comments for CVE-2022-41953
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