CVE-2020-15166

MEDIUM

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.

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/[email protected]/message/BZ5IMNQXDB52JFBXHFLK4AHVORFELNNG/

https://lists.fedoraproject.org/archives/list/[email protected]/message/YFW2ZELCCPS4VLU4OSJOH5YL6KFKTFYW/

https://security.gentoo.org/glsa/202009-12

Details

Source: MITRE

Published: 2020-09-11

Updated: 2020-11-10

Type: CWE-400

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH