CVE-2021-39227 Information

Description

ZRender is a lightweight graphic library providing 2d draw for Apache ECharts. In versions prior to 5.2.1 using merge and clone helper methods in the src/core/util.ts module results in prototype pollution. It affects the popular data visualization library Apache ECharts which uses and exports these two methods directly. The GitHub Security Advisory page for this vulnerability contains a proof of concept. This issue is patched in ZRender version 5.2.1. One workaround is available: Check if there is __proto__ in the object keys. Omit it before using it as an parameter in these affected methods. Or in echarts.util.merge and setOption if project is using ECharts.

CVSS Vector

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

Reference

https://github.com/ecomfe/zrender/security/advisories/GHSA-fhv8-fx5f-7fxf https://github.com/ecomfe/zrender/pull/826 https://github.com/ecomfe/zrender/releases/tag/5.2.1

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8