Amazon Linux 2 : ldns (ALAS-2023-2032)

medium Nessus Plugin ID 175022


The remote Amazon Linux 2 host is missing a security update.


The version of ldns installed on the remote host is prior to 1.6.16-10. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2032 advisory.

- When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload. (CVE-2020-19860)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Run 'yum update ldns' to update your system.

See Also

Plugin Details

Severity: Medium

ID: 175022

File Name: al2_ALAS-2023-2032.nasl

Version: 1.1

Type: local

Agent: unix

Published: 5/2/2023

Updated: 5/3/2023

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

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-19860


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:ldns, p-cpe:/a:amazon:linux:ldns-debuginfo, p-cpe:/a:amazon:linux:ldns-devel, p-cpe:/a:amazon:linux:ldns-doc, p-cpe:/a:amazon:linux:ldns-python, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/27/2023

Vulnerability Publication Date: 1/21/2022

Reference Information

CVE: CVE-2020-19860