CVE-2020-19861

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Source
https://cve.org/CVERecord?id=CVE-2020-19861
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-19861.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-19861
Downstream
Related
Published
2022-01-21T15:15:07.607Z
Modified
2026-05-28T04:05:16.148865562Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

When a zone file in ldns 1.7.1 is parsed, the function ldnsnsec3saltdata is too trusted for the length value obtained from the zone file. When the memcpy is copied, the 0xfe - ldnsrdfsize(saltrdf) byte data can be copied, causing heap overflow information leakage.

References

Affected packages

Git / github.com/nlnetlabs/ldns

Affected ranges

Type
GIT
Repo
https://github.com/nlnetlabs/ldns
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
53bc57512c19b11eebc403a4cb2bbf7295eb0db1
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.7.1"
        }
    ],
    "source": "CPE_STRING",
    "cpe": "cpe:2.3:a:nlnetlabs:ldns:1.7.1:*:*:*:*:*:*:*"
}

Affected versions

release-1.*
release-1.6.11
release-1.6.17rc1
release-1.7.0-rc1
release-1.7.1
release-1.7.1-rc1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-19861.json"