FreeBSD : libzmq4 -- Denial of Service (21ec4428-bdaa-11eb-a04e-641c67a117d8)

high Nessus Plugin ID 149973
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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

Google's oss-fuzz project reports :

Denial-of-Service on CURVE/ZAP-protected servers by unauthenticated clients. 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.

Solution

Update the affected package.

See Also

https://github.com/zeromq/libzmq/releases/tag/v4.3.3

http://www.nessus.org/u?d8fa5f19

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255102

http://www.nessus.org/u?7a3c46c3

Plugin Details

Severity: High

ID: 149973

File Name: freebsd_pkg_21ec4428bdaa11eba04e641c67a117d8.nasl

Version: 1.2

Type: local

Published: 5/26/2021

Updated: 6/1/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:libzmq4, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 5/25/2021

Vulnerability Publication Date: 9/7/2020

Reference Information

CVE: CVE-2020-15166