CVE Vulnerability

CVE-2018-14731

An issue was discovered in HMRServer.js in Parcel parcel-bundler. 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 connection (with a random TCP port number) from any origin. The random port number can be found by connecting to http://127.0.0.1 and reading the "new WebSocket" line in the source code.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/parcel-bundler/parcel/pull/1794 Exploit Patch
https://github.com/parcel-bundler/parcel/issues/1783 Vendor Advisory
https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:parceljs:parcel:-:*:*:*:*:*:*:*
Information

Published : 2018-09-21 05:29

Updated : 2018-11-27 07:01

NVD link : CVE-2018-14731

Mitre link : CVE-2018-14731

Products Affected
No products.
CWE
CWE-1385

Missing Origin Validation in WebSockets