Detections
Analytics

FreeBSD : dnsmasq -- cache poisoning vulnerability in certain configurations (5b72b1ff-877c-11eb-bd4f-2f1d57dafe46)

medium Nessus Plugin ID 147874

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Simon Kelley reports :

[In configurations where the forwarding server address contains an @ character for specifying a sending interface or source address, the] random source port behavior was disabled, making cache poisoning attacks possible.

This only affects configurations of the form server=1.1.1.1@em0 or [email protected], i. e. those that specify an interface to send through, or an IP address to send from, or use together with NetworkManager.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?14b5e7a9

http://www.nessus.org/u?dd2e3d3b

Plugin Details

Severity: Medium

ID: 147874

File Name: freebsd_pkg_5b72b1ff877c11ebbd4f2f1d57dafe46.nasl

Version: 1.4

Type: local

Published: 3/18/2021

Updated: 1/9/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-3448

CVSS v3

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.6

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:dnsmasq, p-cpe:/a:freebsd:freebsd:dnsmasq-devel, cpe:/o:freebsd:freebsd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/18/2021

Vulnerability Publication Date: 3/17/2021

Reference Information

CVE: CVE-2021-3448