CVE Vulnerability

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/zeromq/libzmq/security/advisories/GHSA-4p5v-h92w-6wxw Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1921989 Issue Tracking Third Party Advisory
Configurations

Configuration 1

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

Published : 2021-05-28 11:15

Updated : 2022-08-05 03:20

NVD link : CVE-2021-20237

Mitre link : CVE-2021-20237

Products Affected
No products.
CWE
CWE-401