CVE-2021-20237

Published: May 28, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-400

7.5HIGH

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-400 CWE-401

Affected Products

Сообщество свободного программного обеспечения

oss-projectaka fsf

Debian GNU/LinuxOn-premOS

Operating Systems / linux-distro

ZeroMQOn-premLibrary

OSS Libraries / generic-library

ООО «РусБИТех-Астра»

commercial·RUaka rusbitech-astra

Astra Linux Special EditionOn-premOS

Operating Systems / linux-distro

zeromq

oss-projectaka libzmq, 0mq, zmq

libzmqLibrary

OSS Libraries / generic-library

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://bugzilla.redhat.com/show_bug.cgi?id=1921989

bugzilla.redhat.com

https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw

github.com

https://nvd.nist.gov/vuln/detail/CVE-2021-20237

nvd.nist.gov

and 5 more references View all →

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