CVE-2021-20234

Published: 1 April 2021

An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.

Priority

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package	Release	Status
zeromq3 Launchpad, Ubuntu, Debian	bionic	Released (4.2.5-1ubuntu0.2+esm2) Available with Ubuntu Pro
	focal	Released (4.3.2-2ubuntu1.20.04.1~esm2) Available with Ubuntu Pro
	groovy	Ignored (end of life)
	hirsute	Not vulnerable (4.3.4-1)
	impish	Not vulnerable (4.3.4-1)
	jammy	Not vulnerable (4.3.4-1)
	kinetic	Not vulnerable (4.3.4-1)
	lunar	Not vulnerable (4.3.4-1)
	mantic	Not vulnerable (4.3.4-1)
	trusty	Released (4.0.4+dfsg-2ubuntu0.1+esm3) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (4.3.3-1)
	xenial	Released (4.1.4-7ubuntu0.1+esm2) Available with Ubuntu Pro

Severity score breakdown

Parameter	Value
Base score	6.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

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