CVE-2018-14732 Information

Description

An issue was discovered in lib/Server.js in webpack-dev-server before 3.1.6. Attackers are able to steal developer’s code because the origin of requests is not checked by the WebSocket server which is used for HMR (Hot Module Replacement). Anyone can receive the HMR message sent by the WebSocket server via a ws://127.0.0.1:8080/ connection from any origin.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://blog.cal1.cn/post/Sniffing20Codes20in20Hot20Module20Reloading20Messages https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10 https://github.com/webpack/webpack-dev-server/issues/1445

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5