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

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)
	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

References

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›