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CVE-2020-19860

Published: 21 January 2022

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.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
ldns
Launchpad, Ubuntu, Debian
bionic
Released (1.7.0-3ubuntu4.1)
focal
Released (1.7.0-4.1ubuntu1+esm1)
Available with Ubuntu Pro
impish Ignored
(end of life)
jammy
Released (1.7.1-2ubuntu4+esm1)
Available with Ubuntu Pro
kinetic Ignored
(end of life, was needed)
lunar Not vulnerable
(1.8.1-1)
mantic Not vulnerable
(1.8.1-1)
noble Not vulnerable
(1.8.1-1)
trusty Ignored
(end of standard support)
upstream
Released (1.8.0)
xenial
Released (1.6.17-8ubuntu0.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N