CVEvulnerability

CVE-2020-19861

7.5 HIGH Published 2022-01-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-01-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-125

Description

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.

Affected configurations

• nlnetlabs ldns 1.7.1

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References