CVE-2020-19861

2022-01-2100:00:00

ubuntu.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

49.9%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchldns< 1.7.0-3ubuntu4.1UNKNOWN
ubuntu20.04noarchldns< 1.7.0-4.1ubuntu1+esm1UNKNOWN
ubuntu22.04noarchldns< 1.7.1-2ubuntu4+esm1UNKNOWN
ubuntu16.04noarchldns< 1.6.17-8ubuntu0.1+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	ldns	< 1.7.0-3ubuntu4.1	UNKNOWN
ubuntu	20.04	noarch	ldns	< 1.7.0-4.1ubuntu1+esm1	UNKNOWN
ubuntu	22.04	noarch	ldns	< 1.7.1-2ubuntu4+esm1	UNKNOWN
ubuntu	16.04	noarch	ldns	< 1.6.17-8ubuntu0.1+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN