CVE-2020-15166
zeromq3 - security update
7.5
HIGH
CVSS 3.1
EPSS 0.41%
Description
In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. Users with TCP transport public endpoints, even with CURVE/ZAP enabled, are impacted. If a raw TCP socket is opened and connected to an endpoint that is fully configured with CURVE/ZAP, legitimate clients will not be able to exchange any message. Handshakes complete successfully, and messages are delivered to the library, but the server application never receives them. This is patched in version 4.3.3.
How to fix CVE-2020-15166
To remediate CVE-2020-15166, upgrade the affected package to a fixed version below.
- —upgrade to 4.3.3-r0 or later
- —upgrade to 4.3.3-1 or later
- —upgrade to 4.2.1-4+deb9u3 or later
- —upgrade to 4.3.1-4+deb10u2 or later
Is CVE-2020-15166 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 4.3.3-r0
- from 0, < 4.3.3-1
- from 0, < 4.2.1-4+deb9u3
- from 0, < 4.3.1-4+deb10u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |