CVE-2021-20237

State: Published
Severity: Not scored
Published: May 28, 2021
Updated: Aug 3, 2024
Reserved: Dec 17, 2020

Description

An uncontrolled resource consumption (memory leak) flaw was found in ZeroMQ's src/xpub.cpp in versions before 4.3.3. This flaw allows a remote unauthenticated attacker to send crafted PUB messages that consume excessive memory if the CURVE/ZAP authentication is disabled on the server, causing a denial of service. The highest threat from this vulnerability is to system availability.

Scores

The record has no CVSS score.

Weaknesses

CWE-400

Affected Products

Product	Versions
zeromqn/a	zeromq 4.3.3Affected

References

https://bugzilla.redhat.com/show_bug.cgi?id=1921989
https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw

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