CVE-2017-1000231
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
CVE-2017-1000231 is a critical vulnerability (CVSS 9.8) in Nlnetlabs Ldns, published November 16, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.65%, the 85th percentile. Fixed in ldns 1.7.0-r1.
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
CVE-2017-1000231- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-415
- Updated
- 2026-11-02
CVE List No score
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
CVE-2017-1000231- Updated
- 2026-11-02
EUVDEUVD-2017-1499 No score
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
EUVD-2017-1499- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r9hw-j2qr-6m8c
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
GHSA-r9hw-j2qr-6m8c- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-02
OSVALPINE-CVE-2017-1000231
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
ALPINE-CVE-2017-1000231- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVAZL-10412
CVE-2017-1000231 affecting package ldns for versions less than 1.7.0-32
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
AZL-10412- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
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OSV
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
CVE-2017-1000231- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-1000231
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
DEBIAN-CVE-2017-1000231- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-1000231
A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.
- Record
UBUNTU-CVE-2017-1000231- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2018-0003 No score
Updated ldns packages fix security vulnerabilities
Stephan Zeisberg discovered that ldns incorrectly handled memory when processing data. A remote attacker could use this issue to cause ldns to crash, resulting in a denial of service, or possibly execute arbitrary code (CVE-2017-1000231, CVE-2017-1000232).
- Record
MGASA-2018-0003- Updated
- 2026-11-02
OSVopenSUSE-SU-2020:0438-1 No score
Security update for ldns
This update for ldns fixes the following issues:
- CVE-2017-1000231: Fixed a buffer overflow during token parsing (bsc#1068711).
- CVE-2017-1000232: Fixed a double-free vulnerability in str2host.c (bsc#1068709).
This update was imported from the SUSE:SLE-15:Update update project.
- Record
openSUSE-SU-2020:0438-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10912-1 No score
ldns-1.7.1-1.11 on GA media
These are all security issues fixed in the ldns-1.7.1-1.11 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10912-1- Updated
- 2026-11-02
OSVSUSE-SU-2020:0801-1 No score
Security update for ldns
This update for ldns fixes the following issues:
- CVE-2017-1000231: Fixed a buffer overflow during token parsing (bsc#1068711).
- CVE-2017-1000232: Fixed a double-free vulnerability in str2host.c (bsc#1068709).
- Record
SUSE-SU-2020:0801-1- Updated
- 2026-11-02
OSVUSN-3491-1 No score
ldns vulnerabilities
Leon Weber discovered that the ldns-keygen tool incorrectly set permissions on private keys. A local attacker could possibly use this issue to obtain generated private keys. This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-3209)
Stephan Zeisberg discovered that ldns incorrectly handled memory when processing data. A remote attacker could use this issue to cause ldns to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-1000231, CVE-2017-1000232)
- Record
USN-3491-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ldnsAlpine:v3.10 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.11 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.12 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.13 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.14 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.15 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.16 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.17 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.18 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.19 |
before 1.7.0-r1 | 1.7.0-r1 |
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| Package | Affected | Fixed |
|---|---|---|
ldnsAlpine:v3.20 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.21 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.22 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.23 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.24 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAlpine:v3.9 |
before 1.7.0-r1 | 1.7.0-r1 |
ldnsAzure Linux:2 |
before 1.7.0-32 | 1.7.0-32 |
ldnsDebian:12 |
before 1.7.0-4 | 1.7.0-4 |
ldnsDebian:13 |
before 1.7.0-4 | 1.7.0-4 |
ldnsDebian:14 |
before 1.7.0-4 | 1.7.0-4 |
ldnsDebian:7 |
before 1.6.13-1+deb7u2, plus listed versions 1.6.13-11.6.13-1+deb7u1 |
1.6.13-1+deb7u2 |
ldnsDebian:9 |
before 1.7.0-1+deb9u1, plus listed versions 1.7.0-1 |
1.7.0-1+deb9u1 |
ldnsMageia:5 |
before 1.6.17-5.1.mga5 | 1.6.17-5.1.mga5 |
ldnsMageia:6 |
before 1.6.17-8.1.mga6 | 1.6.17-8.1.mga6 |
ldnsSUSE:Linux Enterprise Module for Basesystem 15 SP1 |
before 1.7.0-4.3.1 | 1.7.0-4.3.1 |
ldnsSUSE:Linux Enterprise Module for Development Tools 15 SP1 |
before 1.7.0-4.3.1 | 1.7.0-4.3.1 |
ldnsUbuntu:14.04:LTS |
before 1.6.17-1ubuntu0.1, plus listed versions 1.6.16-11.6.17-1 |
1.6.17-1ubuntu0.1 |
ldnsUbuntu:16.04:LTS |
before 1.6.17-8ubuntu0.1, plus listed versions 1.6.17-51.6.17-71.6.17-8 |
1.6.17-8ubuntu0.1 |
ldnsopenSUSE:Leap 15.1 |
before 1.7.0-lp151.4.3.1 | 1.7.0-lp151.4.3.1 |
ldnsopenSUSE:Tumbleweed |
before 1.7.1-1.11 | 1.7.1-1.11 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
lists.debian.org/debian-lts-announce/2017/11/msg00028.html
nlnetlabs.nl/bugs-script/show_bug.cgi?id=1256
lists.opensuse.org/opensuse-security-announce/2020-04/msg00000.html
nvd.nist.gov/vuln/detail/CVE-2017-1000231
github.com/advisories/GHSA-r9hw-j2qr-6m8c
security.alpinelinux.org/vuln/CVE-2017-1000231
Show 15 moreShow less
security-tracker.debian.org/tracker/CVE-2017-1000231
advisories.mageia.org/MGASA-2018-0003.html
bugs.mageia.org/show_bug.cgi?id=22066
usn.ubuntu.com/usn/usn-3491-1
suse.com/support/update/announcement/2020/suse-su-20200801-1
bugzilla.suse.com/1068709
ubuntu.com/security/CVE-2017-1000231
cve.org/CVERecord?id=CVE-2017-1000231