CVE-2021-20234
zeromq3 - security update
6.5
MEDIUM
CVSS 3.1
EPSS 0.16%
Description
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.
How to fix CVE-2021-20234
To remediate CVE-2021-20234, upgrade the affected package to a fixed version below.
- —upgrade to 4.3.3-1 or later
- —upgrade to 4.2.1-4+deb9u4 or later
Is CVE-2021-20234 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.3.3-1
- from 0, < 4.2.1-4+deb9u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |