GHSA-8mp8-28xh-r486

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Source
https://github.com/advisories/GHSA-8mp8-28xh-r486
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-8mp8-28xh-r486/GHSA-8mp8-28xh-r486.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-8mp8-28xh-r486
Aliases
Published
2022-05-24T17:35:13Z
Modified
2023-11-08T04:03:24.648637Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
keyget vulnerable to prototype pollution
Details

Overview

Prototype pollution vulnerability in 'keyget' versions 1.0.0 through 2.2.0 allows attacker to cause a denial of service and may lead to remote code execution.

Details

The npm module 'keyget' can be abused by Prototype Pollution vulnerability since the function 'setByPath()' did not check for the type of object before assigning value to the property. Due to this flaw an attacker could create a non-existent property or able to manipulate the property which leads to Denial of Service or potentially Remote code execution.

PoC Details

The setByPath() function accepts three arguments target, path, value. Due to the absence of validation, at values passed into path, value an attacker can supply a malicious value by adjusting the path value to include the __proto__ property. Since there is no validation before assigning property to check whether the assigned path is the Object's own property or not, the property polluted will be directly be assigned to the empty obj({}) thereby polluting the Object prototype. Later in the code, if there is a check to validate polluted the value would be substituted as "true" as it had been polluted.

PoC Code

var keyget = require("keyget")
 keyget.set({}, '__proto__.polluted', 'true');
 console.log(polluted); 
Database specific
{
    "nvd_published_at": "2020-12-02T15:15:00Z",
    "severity": "CRITICAL",
    "github_reviewed_at": "2023-10-19T18:24:49Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-1321"
    ]
}
References

Affected packages

npm / keyget

Package

Affected ranges

Type
SEMVER
Events
Introduced
1.0.0
Fixed
2.3.0

Database specific

{
    "last_known_affected_version_range": "<= 2.2.0"
}