CVE-2020-5219 – angular-expressions

Package

Manager: npm
Name: angular-expressions
Vulnerable Version: >=0 <1.0.1

Severity

Level: High

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

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

EPSS: 0.00633 pctl0.69458

Details

Remote Code Execution in Angular Expressions ### Impact The vulnerability, reported by GoSecure Inc, allows Remote Code Execution, if you call `expressions.compile(userControlledInput)` where `userControlledInput` is text that comes from user input. * If running angular-expressions in the browser, an attacker could run any browser script when the application code calls expressions.compile(userControlledInput). * If running angular-expressions on the server, an attacker could run any Javascript expression, thus gaining Remote Code Execution. ### Patches Users should upgrade to version 1.0.1 of angular-expressions ### Workarounds A temporary workaround might be either to : * disable user-controlled input that will be fed into angular-expressions in your application OR * allow only following characters in the userControlledInput : ```js if (/^[|a-zA-Z.0-9 :"'+-?]+$/.test(userControlledInput)) { var result = expressions.compile(userControlledInput); } else { result = undefined; } ``` ### References [Removal of angular-expression sandbox](http://blog.angularjs.org/2016/09/angular-16-expression-sandbox-removal.html) ### For more information If you have any questions or comments about this advisory: * Open an issue in [angular-expressions](https://github.com/peerigon/angular-expressions/issues) * [Email us](mailto:contact@javascript-ninja.fr) ### Credits The issue was reported by Maxime Nadeau from GoSecure, Inc.

Metadata

Created: 2020-01-24T15:27:25Z
Modified: 2021-01-08T20:33:38Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/01/GHSA-hxhm-96pp-2m43/GHSA-hxhm-96pp-2m43.json
CWE IDs: ["CWE-74"]
Alternative ID: GHSA-hxhm-96pp-2m43
Finding: F184
Auto approve: 1