CVE-2019-16866
First published: Thu Oct 03 2019(Updated: )
Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/unbound | <=1.9.3-1<=1.9.0-2 | 1.9.4-1 1.9.0-2+deb10u1 |
| Nlnetlabs Unbound | <1.9.4 | |
| Canonical Ubuntu Linux | =19.04 | |
| ubuntu/unbound | <1.9.0-2ubuntu0.1 | 1.9.0-2ubuntu0.1 |
| debian/unbound | 1.13.1-1+deb11u2 1.17.1-2+deb12u2 1.20.0-1 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2019-16866
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16866
- https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=941692
- https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/
- https://seclists.org/bugtraq/2019/Oct/23
- https://usn.ubuntu.com/4149-1/
- https://www.debian.org/security/2019/dsa-4544
- https://launchpad.net/bugs/cve/CVE-2019-16866
- https://nlnetlabs.nl/downloads/unbound/patch_cve_2019-16866.diff
- https://github.com/NLnetLabs/unbound/commit/b60c4a472c856f0a98120b7259e991b3a6507eb5
- https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/
- https://ubuntu.com/security/notices/USN-4149-1
- https://www.cve.org/CVERecord?id=CVE-2019-16866
- https://nvd.nist.gov/vuln/detail/CVE-2019-16866
- https://ubuntu.com/security/CVE-2019-16866
Frequently Asked Questions
What is CVE-2019-16866?
CVE-2019-16866 is a vulnerability in Unbound before version 1.9.4 that allows remote attackers to trigger a crash via a crafted NOTIFY query by accessing uninitialized memory.
How does CVE-2019-16866 affect Unbound?
CVE-2019-16866 affects Unbound versions before 1.9.4.
What is the severity of CVE-2019-16866?
CVE-2019-16866 has a severity rating of 7.5 (High).
How can I fix CVE-2019-16866?
To fix CVE-2019-16866, update Unbound to version 1.9.4 or higher.
Where can I find more information about CVE-2019-16866?
More information about CVE-2019-16866 can be found at the following references: [CVE-2019-16866](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16866), [NLnetlabs](https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt), [GitHub](https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog).
- collector/debian-bugs
- alias/CVE-2019-16866
- collector/nvd-index
- agent/type
- agent/weakness
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/softwarecombine
- agent/remedy
- agent/severity
- agent/references
- agent/description
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- collector/nvd-cve
- source/NVD
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- collector/usn-cve
- source/Ubuntu
- package-manager/debian
- vendor/nlnetlabs
- canonical/nlnetlabs unbound
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/19.04
- package-manager/ubuntu