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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/ChangelogProduct, Release Notes
- 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://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txtPatch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Oct/23
- https://usn.ubuntu.com/4149-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4544
- https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/ChangelogProduct, Release Notes
- 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://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txtPatch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Oct/23
- https://usn.ubuntu.com/4149-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4544
Timeline
- Published
- Oct 3, 2019
- Last modified
- Oct 8, 2026
- NVD status
- Modified