GLSA 202009-12: ZeroMQ: Denial of service

Severity:normal
Title:ZeroMQ: Denial of service
Date:09/13/2020
Bugs: #740574
ID:202009-12

Synopsis

A vulnerability in ZeroMQ could lead to a Denial of Service condition.

Background

Looks like an embeddable networking library but acts like a concurrency framework.

Affected packages

Package Vulnerable Unaffected Architecture(s)
net-libs/zeromq < 4.3.3 >= 4.3.3 All supported architectures

Description

It was discovered that ZeroMQ does not properly handle connecting peers before a handshake is completed.

Impact

An unauthenticated remote attacker able to connect to a ZeroMQ endpoint, even with CURVE encryption/authentication enabled, can cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All ZeroMQ users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-libs/zeromq-4.3.3"
    

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202009-12.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License

Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

Thank you!