CVE-2016-10536: hackerone engine.io-client node module Channel Accessible by Non-Endpoint

Vulnerability summary

CVE-2016-10536 is a medium (CVSS 5.9) Channel Accessible by Non-Endpoint vulnerability in hackerone engine.io-client node module. EPSS estimates a 1.00% chance of exploitation in the next 30 days, higher than 62.1% of scored vulnerabilities.

Timeline

1. 31-05-2018
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

Description

engine.io-client is the client for engine.io, the implementation of a transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. The vulnerability is related to the way that node.js handles the `rejectUnauthorized` setting. If the value is something that evaluates to false, certificate verification will be disabled. This is problematic as engine.io-client 1.6.8 and earlier passes in an object for settings that includes the rejectUnauthorized property, whether it has been set or not. If the value has not been explicitly changed, it will be passed in as `null`, resulting in certificate verification being turned off.

• CWE-300Channel Accessible by Non-EndpointThe product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint.
• CWE-295Improper Certificate ValidationThe product does not validate, or incorrectly validates, a certificate.