GitHub Advisoryadvisory · npm

GHSA-2mhh-w6q8-5hxw Remote Memory Disclosure in ws

LOW Published 2019-02-18 Modified 2020-08-31 Official page ↗
Aliases
CVE-2016-10518
Ecosystem
npm
Packages
ws
Severity
Low
Weaknesses
CWE-201
Reviewed
2020-06-16

Affected packages

• npm ws: < 1.0.1 → fixed in 1.0.1

Description

Versions of `ws` prior to 1.0.1 are affected by a remote memory disclosure vulnerability. In certain rare circumstances, applications which allow users to control the arguments of a `client.ping()` call will cause `ws` to send the contents of an allocated but non-zero-filled buffer to the server. This may disclose sensitive information that still exists in memory after previous use of the memory for other tasks. Proof of Concept ``` var ws = require('ws') var server = new ws.Server({ port: 9000 }) var client = new ws('ws://localhost:9000') client.on('open', function () { console.log('open') client.ping(50) // this sends a non-zeroed buffer of 50 bytes client.on('pong', function (data) { console.log('got pong') console.log(data) // Data from the client. }) }) ``` Recommendation Update to version 1.0.1 or greater.

Related

Alias · CVE (1)

  • CVE-2016-10518 A vulnerability was found in the ping functionality of the ws module before 1.0.0 which allowed clients to allocate memory by sending a… vulnerability

Weakness · CWE (1)

  • CWE-201 Insertion of Sensitive Information Into Sent Data weakness

References