Debian DLA-2443-1 : zeromq3 security update

Medium Nessus Plugin ID 142861

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VPR Score: 3.6

Synopsis

The remote Debian host is missing a security 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.

For Debian 9 stretch, this problem has been fixed in version 4.2.1-4+deb9u3.

We recommend that you upgrade your zeromq3 packages.

For the detailed security status of zeromq3 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/zeromq3

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected libzmq3-dev, libzmq5, and libzmq5-dbg packages.

See Also

https://lists.debian.org/debian-lts-announce/2020/11/msg00017.html

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

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

Plugin Details

Severity: Medium

ID: 142861

File Name: debian_DLA-2443.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2020/11/12

Updated: 2020/11/20

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2020-15166

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libzmq3-dev, p-cpe:/a:debian:debian_linux:libzmq5, p-cpe:/a:debian:debian_linux:libzmq5-dbg, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/11/10

Vulnerability Publication Date: 2020/09/11

Reference Information

CVE: CVE-2020-15166