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CVE-2020-19861

Published: 21 January 2022

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.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
ldns
Launchpad, Ubuntu, Debian
bionic
Released (1.7.0-3ubuntu4.1)
focal
Released (1.7.0-4.1ubuntu1+esm1)
impish Ignored
(reached end-of-life)
jammy
Released (1.7.1-2ubuntu4+esm1)
kinetic Needed

trusty Ignored
(out of standard support)
upstream
Released (1.8.0)
xenial
Released (1.6.17-8ubuntu0.1+esm1)