CVE-2020-19860

Published: Jan 21, 2022Modified: Jun 17, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: NVD

Description

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.

Affected (1)

Products: Nlnetlabs: Ldns

Nlnetlabs

1 product

Ldns

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Nlnetlabs Ldns	Version 1.7.1

Related CWEs

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (4)

https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/NLnetLabs/ldns/issues/50

Source: cve@mitre.org

ExploitIssue TrackingThird Party Advisory

https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://github.com/NLnetLabs/ldns/issues/50

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitIssue TrackingThird Party Advisory

Timeline

No history available yet.