CVE-2021-20237

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.
References
Configurations

Configuration 1 (hide)

cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*

History

05 Aug 2022, 15:20

Type Values Removed Values Added
CWE CWE-400 CWE-401

08 Jun 2021, 02:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : 4.3
v3 : 7.5
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1921989 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1921989 - Issue Tracking, Third Party Advisory
References (MISC) https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw - (MISC) https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw - Patch, Third Party Advisory
CPE cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
CWE CWE-400

28 May 2021, 11:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-05-28 11:15

Updated : 2024-02-04 21:47


NVD link : CVE-2021-20237

Mitre link : CVE-2021-20237

CVE.ORG link : CVE-2021-20237


JSON object : View

Products Affected

zeromq

  • libzmq
CWE
CWE-401

Missing Release of Memory after Effective Lifetime

CWE-400

Uncontrolled Resource Consumption