1. Home
  2. CVE Database
  3. CVE-2019-16866
HIGH · 7.5

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.

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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
NlnetlabsUnbound< 1.9.4
CanonicalUbuntu Linux19.04

Related Weaknesses (CWE)

CWE-908CWE-755

References

FAQ

What is CVE-2019-16866?

CVE-2019-16866 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

How severe is CVE-2019-16866?

CVE-2019-16866 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-16866?

Check the references section above for vendor advisories and patch information. Affected products include: Nlnetlabs Unbound, Canonical Ubuntu Linux.