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.
Published: 2022-01-21
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2910-1 ldns security update
EUVD EUVD EUVD-2020-11757 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.
Ubuntu USN Ubuntu USN USN-5257-1 ldns vulnerabilities
Ubuntu USN Ubuntu USN USN-5257-2 ldns vulnerabilities
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T14:15:28.490Z

Reserved: 2020-08-13T00:00:00.000Z

Link: CVE-2020-19861

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-01-21T15:15:07.607

Modified: 2024-11-21T05:09:26.213

Link: CVE-2020-19861

cve-icon Redhat

Severity :

Publid Date: 2021-09-26T00:00:00Z

Links: CVE-2020-19861 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses