What’s Vulnerable › Vulnerabilities

CVE-2020-15166: Denial of Service in ZeroMQ

Description

In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. Users with TCP transport public endpoints, even with CURVE/ZAP enabled, are impacted. If a raw TCP socket is opened and connected to an endpoint that is fully configured with CURVE/ZAP, legitimate clients will not be able to exchange any message. Handshakes complete successfully, and messages are delivered to the library, but the server application never receives them. This is patched in version 4.3.3.

Affected products

How to fix

Upgrade to a fixed version: zeromq libzmq 4.3.3. Check the vendor advisory for mitigations.

References

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