Vulnerability Details : 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.
Exploit prediction scoring system (EPSS) score for CVE-2019-16866
Probability of exploitation activity in the next 30 days: 12.55%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 95 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-16866
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
[email protected] |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
[email protected] |
CWE ids for CVE-2019-16866
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: [email protected] (Primary)
-
The product uses or accesses a resource that has not been initialized.Assigned by: [email protected] (Primary)
References for CVE-2019-16866
-
https://seclists.org/bugtraq/2019/Oct/23
-
https://usn.ubuntu.com/4149-1/
Third Party Advisory
-
https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog
Product;Release Notes
-
https://www.debian.org/security/2019/dsa-4544
-
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
Patch;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
Products affected by CVE-2019-16866
- cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
- cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*