EulerOS Virtualization : ldns (EulerOS-SA-2023-1265)

high Nessus Plugin ID 170789


The remote EulerOS Virtualization host is missing multiple security updates.


According to the versions of the ldns package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

- 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)

- When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length value obtained from the zone file. When the memcpy is copied, the 0xfe - ldns_rdf_size(salt_rdf) byte data can be copied, causing heap overflow information leakage. (CVE-2020-19861)

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


Update the affected ldns packages.

See Also

Plugin Details

Severity: High

ID: 170789

File Name: EulerOS_SA-2023-1265.nasl

Version: 1.1

Type: local

Published: 1/30/2023

Updated: 9/5/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2020-19861


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:ldns, cpe:/o:huawei:euleros:uvp:

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/30/2023

Vulnerability Publication Date: 1/21/2022

Reference Information

CVE: CVE-2020-19860, CVE-2020-19861