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Status published
High
CVE-2019-16866
Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog
- https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
- https://usn.ubuntu.com/4149-1/
- https://www.debian.org/security/2019/dsa-4544
- https://seclists.org/bugtraq/2019/Oct/23
- 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/
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Affected Vendor
nlnetlabs
View all reports →Affected Software
unbound, ubuntu linux
Vulnerable Versions:
0, 19.04
Timeline
Official Publish:
October 3rd, 2019
Last Modified:
August 5th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.