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Vulnerability record · CVE-2017-1000231 · published 17 November 2017

CVE-2017-1000231: Nlnetlabs ldns double free vulnerability

Nlnetlabs · Ldns

A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.

9.8 CVSS 3.0 Critical EPSS 2.7% · top 14.9% CWE-415 · Double free
9.8CVSS 3.0 base score, v2 7.5
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00000.html
https://lists.debian.org/debian-lts-announce/2017/11/msg00028.html
https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=1256 PatchVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00000.html
https://lists.debian.org/debian-lts-announce/2017/11/msg00028.html
https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=1256 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2017-1000232Nlnetlabs ldns double free vulnerabilityA double-free vulnerability in str2host.c in ldns 1.7.0 have unspecified impact and attack vectors.EPSS 2.3%8.2CVE-2026-10846Nlnetlabs ldns origin validation error vulnerabilityNLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination…EPSS 0.15%7.5CVE-2020-19861Nlnetlabs ldns out-of-bounds read vulnerabilityWhen 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…EPSS 1.5%6.8CVE-2011-3581Nlnetlabs ldns memory buffer overflow vulnerabilityHeap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11 allows remote attackers to cause a denial of service (c…EPSS 4.1%6.5CVE-2020-19860Nlnetlabs ldns out-of-bounds read vulnerabilityWhen ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can …EPSS 1.3%6.4CVE-2009-1086Nlnetlabs ldns vulnerabilityHeap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service (memory co…EPSS 3.5%2.1CVE-2014-3209Nlnetlabs ldns permissions and access controls vulnerabilityThe ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which might allow local users to obtain the priva…EPSS 0.38%9.8CVE-2026-33824Double free in Windows IKE Extension enables remote code executionA double free flaw (CWE-415) exists in the Windows IKE Extension, reachable over the network by an unauthenticated attacker. Successful exploitation …KEVEPSS 1.6%analysed

Source: NIST National Vulnerability Database (record CVE-2017-1000231), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.