CVE-2020-19860

2022-01-2100:00:00

ubuntu.com

ldns version 1.7.1

zone file verification

heap vulnerability

information leakage

unix

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

52.0%

JSON

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.

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+esm1UNKNOWN

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	UNKNOWN