Arbitrary Code Execution Affecting access-policy 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-ACCESSPOLICY-571490
  • published5 Jun 2020
  • disclosed5 Jun 2020
  • creditJHU System Security Lab

Introduced: 5 Jun 2020

CVE-2020-7674  (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 access-policy.

Overview

access-policy is a package that encodes and decodes policy JSON files for use with web applications.

Affected versions of this package are vulnerable to Arbitrary Code Execution. User input provided to the template function is executed by the eval function resulting in code execution.

PoC

var a = require("access-policy");
var statements = '`;console.log(123);//';
data = {};

a.encode(statements,data)

References

CVSS Scores

version 3.1