CVE-2020-15166

Denial of Service in ZeroMQ

CVSS 7.5 HIGHEPSS 3.4%CWE-400

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 3.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

11 Sep 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

zeromq · libzmq

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References

https://github.com/zeromq/libzmq/pull/3913 https://github.com/zeromq/libzmq/pull/3973 https://github.com/zeromq/libzmq/security/advisories/GHSA-25wp-cf8g-938m https://lists.debian.org/debian-lts-announce/2020/11/msg00017.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ5IMNQXDB52JFBXHFLK4AHVORFELNNG/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFW2ZELCCPS4VLU4OSJOH5YL6KFKTFYW/https://security.gentoo.org/glsa/202009-12