Debian DSA-4761-1 : zeromq3 - security update

high Nessus Plugin ID 140302
New! Plugin Severity Now Using CVSS v3

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

Synopsis

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

Description

It was discovered that ZeroMQ, a lightweight messaging kernel library does not properly handle connecting peers before a handshake is completed. A remote, unauthenticated client connecting to an application using the libzmq library, running with a socket listening with CURVE encryption/authentication enabled can take advantage of this flaw to cause a denial of service affecting authenticated and encrypted clients.

Solution

Upgrade the zeromq3 packages.

For the stable distribution (buster), this problem has been fixed in version 4.3.1-4+deb10u2.

See Also

https://security-tracker.debian.org/tracker/source-package/zeromq3

https://packages.debian.org/source/buster/zeromq3

https://www.debian.org/security/2020/dsa-4761

Plugin Details

Severity: High

ID: 140302

File Name: debian_DSA-4761.nasl

Version: 1.3

Type: local

Agent: unix

Published: 9/8/2020

Updated: 9/21/2020

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:debian:debian_linux:zeromq3, cpe:/o:debian:debian_linux:10.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/7/2020

Vulnerability Publication Date: 9/11/2020

Reference Information

CVE: CVE-2020-15166

DSA: 4761