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CVE-2021-20236

Fixed in a distro release EPSS 2%

A flaw was found in the ZeroMQ server in versions before 4.3.3. This flaw allows a malicious client to cause a stack buffer overflow on the server by sending crafted topic subscription requests and then unsubscribing. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Published 2021-05-28 · CVE record · OSV

Products: zeromq, redhat ceph_storage, redhat enterprise_linux, fedoraproject fedora

Distro releases

ReleasePackageFixed in
Debian 12zeromq34.3.3-1
Debian 13zeromq34.3.3-1
Debian 14zeromq34.3.3-1
Ubuntu Pro 14.04 LTSzeromq3no fix
Ubuntu Pro 16.04 LTSzeromq3no fix
Ubuntu Pro 18.04 LTSzeromq3no fix
Ubuntu Pro 20.04 LTSzeromq3no fix