CVE-2020-15166

HIGH
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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

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

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

Vulnerable Software

Configuration 1

OR

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

Tenable Plugins

View all (11 total)

IDNameProductFamilySeverity
149973FreeBSD : libzmq4 -- Denial of Service (21ec4428-bdaa-11eb-a04e-641c67a117d8)NessusFreeBSD Local Security Checks
high
143658SUSE SLED15 / SLES15 Security Update : zeromq (SUSE-SU-2020:3264-1)NessusSuSE Local Security Checks
high
142950openSUSE Security Update : zeromq (openSUSE-2020-1910)NessusSuSE Local Security Checks
high
142925openSUSE Security Update : zeromq (openSUSE-2020-1907)NessusSuSE Local Security Checks
high
142861Debian DLA-2443-1 : zeromq3 security updateNessusDebian Local Security Checks
high
140759Fedora 32 : zeromq (2020-08402f4071)NessusFedora Local Security Checks
high
140664Photon OS 2.0: Zeromq PHSA-2020-2.0-0281NessusPhotonOS Local Security Checks
high
140567GLSA-202009-12 : ZeroMQ: Denial of serviceNessusGentoo Local Security Checks
high
140537Photon OS 3.0: Zeromq PHSA-2020-3.0-0139NessusPhotonOS Local Security Checks
high
140459Photon OS 1.0: Zeromq PHSA-2020-1.0-0322NessusPhotonOS Local Security Checks
high
140302Debian DSA-4761-1 : zeromq3 - security updateNessusDebian Local Security Checks
high