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Debian DSA-4691-1 : pdns-recursor - security update

high Nessus Plugin ID 136778

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Synopsis

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

Description

Two vulnerabilities have been discovered in PDNS Recursor, a resolving name server; a traffic amplification attack against third-party authoritative name servers (NXNSAttack) and insufficient validation of NXDOMAIN responses lacking an SOA.

The version of pdns-recursor in the oldstable distribution (stretch) is no longer supported. If these security issues affect your setup, you should upgrade to the stable distribution (buster).

Solution

Upgrade the pdns-recursor packages.

For the stable distribution (buster), these problems have been fixed in version 4.1.11-1+deb10u1.

See Also

http://www.nessus.org/u?51aad11d

https://packages.debian.org/source/buster/pdns-recursor

https://www.debian.org/security/2020/dsa-4691

Plugin Details

Severity: High

ID: 136778

File Name: debian_DSA-4691.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/22/2020

Updated: 3/12/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-12244

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:H/I:N/A:N

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:pdns-recursor

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/21/2020

Vulnerability Publication Date: 5/19/2020

Reference Information

CVE: CVE-2020-10995, CVE-2020-12244

DSA: 4691