CVE-2021-39131 – ced

Package

Manager: npm
Name: ced
Vulnerable Version: =0.1.0

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00446 pctl0.62574

Details

Improper Handling of Unexpected Data Type in ced ### Impact In ced v0.1.0, passing data types other than `Buffer` causes the Node.js process to crash. ### Patches The problem has been patched in [ced v1.0.0](https://github.com/sonicdoe/ced/releases/tag/v1.0.0). You can upgrade from v0.1.0 without any breaking changes. ### Workarounds Before passing an argument to ced, verify it’s a `Buffer` using [`Buffer.isBuffer(obj)`](https://nodejs.org/api/buffer.html#buffer_static_method_buffer_isbuffer_obj). ### CVSS score [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:O/RC:C](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:O/RC:C) Base Score: 7.5 (High) Temporal Score: 7.2 (High) Since ced is a library, the scoring is based on the “[reasonable worst-case implementation scenario](https://www.first.org/cvss/v3.1/user-guide#3-7-Scoring-Vulnerabilities-in-Software-Libraries-and-Similar)”, namely, accepting data from untrusted sources over a network and passing it directly to ced. Depending on your specific implementation, the vulnerability’s severity in your program may be different. ### Proof of concept ```js const express = require("express"); const bodyParser = require("body-parser"); const ced = require("ced"); const app = express(); app.use(bodyParser.raw()); app.post("/", (req, res) => { const encoding = ced(req.body); res.end(encoding); }); app.listen(3000); ``` `curl --request POST --header "Content-Type: text/plain" --data foo http://localhost:3000` crashes the server. ### References - https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3

Metadata

Created: 2021-08-23T19:42:28Z
Modified: 2021-10-21T14:15:51Z
Source: MANUAL
CWE IDs: ["CWE-241"]
Alternative ID: GHSA-27wq-qx3q-fxm9
Finding: F184
Auto approve: 1