GLSA 202009-12: ZeroMQ: Denial of service

http://security.gentoo.org/

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

CVE-2020-15166

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.