Arbitrary Code Execution Affecting node-extend package, versions *


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
1.29% (86th percentile)

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  • Snyk IDSNYK-JS-NODEEXTEND-571491
  • published5 Jun 2020
  • disclosed5 Jun 2020
  • creditJHU System Security Lab

Introduced: 5 Jun 2020

CVE-2020-7673  (opens in a new tab)
CWE-78  (opens in a new tab)
First added by Snyk

How to fix?

There is no fixed version for node-extend.

Overview

node-extend is an extend for node.js.

Affected versions of this package are vulnerable to Arbitrary Code Execution. User input provided to the argument A of extend function(A,B,as,isAargs) located within lib/extend.js is executed by the eval function, resulting in code execution.

PoC

var extend = require("node-extend");
foo = extend("function (){});console.log(234); //(){console.log(123)}","")
console.log(foo);

CVSS Scores

version 3.1