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FreeBSD : Unbound/NSD -- Denial of service vulnerability (388ebb5b-3c95-11eb-929d-d4c9ef517024)

medium Nessus Plugin ID 144193

Synopsis

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

Description

NLNetLabs reports :

Unbound and NSD when writing the PID file would not check if an existing file was a symlink. This could allow for a local symlink \ attack if an attacker has access to the user Unbound/NSD runs as.

Solution

Update the affected packages.

See Also

https://nlnetlabs.nl/downloads/unbound/CVE-2020-28935.txt

http://www.nessus.org/u?311dcbdc

Plugin Details

Severity: Medium

ID: 144193

File Name: freebsd_pkg_388ebb5b3c9511eb929dd4c9ef517024.nasl

Version: 1.3

Type: local

Published: 12/14/2020

Updated: 2/2/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2020-28935

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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:freebsd:freebsd:nsd, p-cpe:/a:freebsd:freebsd:unbound, 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: 12/12/2020

Vulnerability Publication Date: 12/1/2020

Reference Information

CVE: CVE-2020-28935