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Ubuntu: USN-4920-1 (CVE-2021-20237): ZeroMQ vulnerabilities

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Ubuntu: USN-4920-1 (CVE-2021-20237): ZeroMQ vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
05/28/2021
Created
03/29/2023
Added
03/22/2023
Modified
05/01/2023

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.

Solution(s)

  • ubuntu-upgrade-libzmq3
  • ubuntu-upgrade-libzmq5

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