CVE-2020-19860

Source
https://nvd.nist.gov/vuln/detail/CVE-2020-19860
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-19860.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-19860
Downstream
Related
Published
2022-01-21T14:15:07Z
Modified
2025-10-13T10:04:46.087854Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

When ldns version 1.7.1 verifies a zone file, the ldnsrrnewfrmstr_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.

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
Fixed

Affected versions

release-1.*

release-1.6.11
release-1.6.17
release-1.6.17rc1
release-1.6.17rc2
release-1.7.0
release-1.7.0-rc1
release-1.7.1
release-1.7.1-rc1

Database specific

{
    "vanir_signatures": [
        {
            "deprecated": false,
            "id": "CVE-2020-19860-191561e2",
            "signature_version": "v1",
            "digest": {
                "length": 8891.0,
                "function_hash": "251941352422954362548173721366397297493"
            },
            "signature_type": "Function",
            "target": {
                "function": "ldns_rr_new_frm_str_internal",
                "file": "rr.c"
            },
            "source": "https://github.com/nlnetlabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3"
        },
        {
            "deprecated": false,
            "id": "CVE-2020-19860-75361339",
            "signature_version": "v1",
            "digest": {
                "line_hashes": [
                    "304150356136728191013666289071051846294",
                    "155677165420181730933934979959893485858",
                    "77135638458978608597762295275407082624",
                    "260965272174818498082687692350980513016",
                    "130518172275200410960406267494341286040",
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                    "21702059573567139622621572651513730590",
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                    "12078708481039353439108142430185836923",
                    "275043312956904328881478936168966183832",
                    "72408890483878620117238557110253677009"
                ],
                "threshold": 0.9
            },
            "signature_type": "Line",
            "target": {
                "file": "rr.c"
            },
            "source": "https://github.com/nlnetlabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3"
        }
    ]
}