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CVE-2021-23632— Remote Code Execution (RCE)

Quick assessment

Affected
n/a git
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Github Git是一套免费、开源的分布式版本控制系统。 Github Git 存在操作系统命令注入漏洞，该漏洞源于 Git.git 方法中缺少清理功能，允许执行操作系统命令而不仅仅是git命令。该漏洞影响以下产品：Git 所有版本。

CVSS 6.6 · Medium EPSS 2.35% · P83

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-23632

Vulnerability Information
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Vulnerability Title
Remote Code Execution (RCE)
Source: CVE Program / CVE List V5
Vulnerability Description
All versions of package git are vulnerable to Remote Code Execution (RCE) due to missing sanitization in the Git.git method, which allows execution of OS commands rather than just git commands. Steps to Reproduce 1. Create a file named exploit.js with the following content: js var Git = require("git").Git; var repo = new Git("repo-test"); var user_input = "version; date"; repo.git(user_input, function(err, result) { console.log(result); }) 2. In the same directory as exploit.js, run npm install git. 3. Run exploit.js: node exploit.js. You should see the outputs of both the git version and date command-lines. Note that the repo-test Git repository does not need to be present to make this PoC work.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Github Git 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Github Git是一套免费、开源的分布式版本控制系统。 Github Git 存在操作系统命令注入漏洞，该漏洞源于 Git.git 方法中缺少清理功能，允许执行操作系统命令而不仅仅是git命令。该漏洞影响以下产品：Git 所有版本。
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 0 ~ unspecified -

II. Public POCs for CVE-2021-23632

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III. Intelligence Information for CVE-2021-23632

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Vendor Advisories for CVE-2021-23632 (1)

Same Patch Batch · n/a · 2022-03-17 · 36 CVEs total

CVE-2022-0748 9.8 CRITICAL Arbitrary Code Execution
CVE-2022-25354 8.6 HIGH Prototype Pollution
CVE-2022-25352 7.5 HIGH Prototype Pollution
CVE-2022-0749 7.4 HIGH Deserialization of Untrusted Data
CVE-2022-25760 7.1 HIGH Arbitrary Code Injection
CVE-2021-23771 6.5 MEDIUM Sandbox Bypass
CVE-2021-23556 6.4 MEDIUM Exposed Dangerous Method or Function
CVE-2022-25296 6.3 MEDIUM Prototype Pollution
CVE-2022-21221 5.9 MEDIUM Directory Traversal
CVE-2020-15591 F*EX 代码注入漏洞
CVE-2021-44260 WAVLINK AC1200 访问控制错误漏洞
CVE-2022-26503 Veeam Agent for Windows 代码问题漏洞
CVE-2022-25364 Gradle 安全漏洞
CVE-2021-45040 Spatie Laravel Media Library Pro 代码问题漏洞
CVE-2022-26501 Veeam Backup&Replication 访问控制错误漏洞
CVE-2021-46107 Ligeo Archives 代码问题漏洞
CVE-2022-26504 Veeam Backup&Replication 授权问题漏洞
CVE-2022-26500 Veeam Backup&Replication 路径遍历漏洞
CVE-2022-24302 Paramiko 竞争条件问题漏洞
CVE-2021-44088 Attendance and Payroll System SQL注入漏洞

Showing top 20 of 36 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: git
Same vendor: n/a

V. Comments for CVE-2021-23632

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