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CVE-2020-26233— Remote Code Execution in Git Credential Manager Core

Quick assessment

Affected
microsoft Git-Credential-Manager-Core
Exploitation
Public or AI PoC available; prioritize validation
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 Credential Manager Core 存在SQL注入漏洞，如果顶级存储库中存在恶意的git.exe可执行文件，则该二进制文件将在尝试读取配置时由Git Credential Manager Core启动，而不是由％PATH％上的git.exe启动。 这仅影响Windows上的GCM Core。

CVSS 7.3 · High EPSS 5.99% · P93

Possible ATT&CK Techniques 1 AI

T1059.009 · Cloud API
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I. Basic Information for CVE-2020-26233

Vulnerability Information
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Vulnerability Title
Remote Code Execution in Git Credential Manager Core
Source: CVE Program / CVE List V5
Vulnerability Description
Git Credential Manager Core (GCM Core) is a secure Git credential helper built on .NET Core that runs on Windows and macOS. In Git Credential Manager Core before version 2.0.289, when recursively cloning a Git repository on Windows with submodules, Git will first clone the top-level repository and then recursively clone all submodules by starting new Git processes from the top-level working directory. If a malicious git.exe executable is present in the top-level repository then this binary will be started by Git Credential Manager Core when attempting to read configuration, and not git.exe as found on the %PATH%. This only affects GCM Core on Windows, not macOS or Linux-based distributions. GCM Core version 2.0.289 contains the fix for this vulnerability, and is available from the project's GitHub releases page. GCM Core 2.0.289 is also bundled in the latest Git for Windows release; version 2.29.2(3). As a workaround, users should avoid recursively cloning untrusted repositories with the --recurse-submodules option.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确的解析名称或索引
Source: CVE Program / CVE List V5
Vulnerability Title
Git SQL注入漏洞
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 Credential Manager Core 存在SQL注入漏洞，如果顶级存储库中存在恶意的git.exe可执行文件，则该二进制文件将在尝试读取配置时由Git Credential Manager Core启动，而不是由％PATH％上的git.exe启动。 这仅影响Windows上的GCM Core。
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
microsoft Git-Credential-Manager-Core <= 2.0.280 -

II. Public POCs for CVE-2020-26233

# POC Description Source Link Shenlong Link
1 None https://github.com/whr819987540/test_CVE-2020-26233 POC Details
2 None https://github.com/an1p3lg5/CVE-2020-26233 POC Details
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III. Intelligence Information for CVE-2020-26233

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Patches & Fixes for CVE-2020-26233 (1)

Vendor Advisories for CVE-2020-26233 (1)

Security Blog Posts for CVE-2020-26233 (1)

Other References for CVE-2020-26233 (2)

IV. Related Vulnerabilities

Same vendor: microsoft
Same weakness: CWE-706

V. Comments for CVE-2020-26233

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