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.
References
Link | Resource |
---|---|
https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages | Exploit Third Party Advisory |
https://github.com/parcel-bundler/parcel/issues/1783 | Vendor Advisory |
https://github.com/parcel-bundler/parcel/pull/1794 | Exploit Patch Vendor Advisory |
https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages | Exploit Third Party Advisory |
https://github.com/parcel-bundler/parcel/issues/1783 | Vendor Advisory |
https://github.com/parcel-bundler/parcel/pull/1794 | Exploit Patch Vendor Advisory |
Configurations
History
21 Nov 2024, 03:49
Type | Values Removed | Values Added |
---|---|---|
References | () https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages - Exploit, Third Party Advisory | |
References | () https://github.com/parcel-bundler/parcel/issues/1783 - Vendor Advisory | |
References | () https://github.com/parcel-bundler/parcel/pull/1794 - Exploit, Patch, Vendor Advisory |
Information
Published : 2018-09-21 17:29
Updated : 2024-11-21 03:49
NVD link : CVE-2018-14731
Mitre link : CVE-2018-14731
CVE.ORG link : CVE-2018-14731
JSON object : View
Products Affected
parceljs
- parcel
CWE
CWE-200
Exposure of Sensitive Information to an Unauthorized Actor