Vulnerability in Nlnetlabs Unbound
CVE-2019-16866
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.035 (88.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000
Affected products
- Nlnetlabs Unbound
- Canonical Ubuntu Linux — versions 19.04
Weakness classification (CWE)
References
- github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog (Product, Release Notes)
- nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt (Patch, Vendor Advisory)
- usn.ubuntu.com/4149-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2019/dsa-4544 (vendor-advisory)
- seclists.org/bugtraq/2019/Oct/23 (mailing-list)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2019-16866?
- CVE-2019-16866 is a high-severity vulnerability in Nlnetlabs Unbound, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2019-10-03.
- How severe is CVE-2019-16866?
- High severity. CVSS v3 base score is 7.5 out of 10.