Debian Security Advisory

DSA-4761-1 zeromq3 -- security update

Date Reported:
07 Sep 2020
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-15166.
More information:

It was discovered that ZeroMQ, a lightweight messaging kernel library does not properly handle connecting peers before a handshake is completed. A remote, unauthenticated client connecting to an application using the libzmq library, running with a socket listening with CURVE encryption/authentication enabled can take advantage of this flaw to cause a denial of service affecting authenticated and encrypted clients.

For the stable distribution (buster), this problem has been fixed in version 4.3.1-4+deb10u2.

We recommend that you upgrade your zeromq3 packages.

For the detailed security status of zeromq3 please refer to its security tracker page at: