CVE-2019-16866 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/ https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt https://seclists.org/bugtraq/2019/Oct/23 https://usn.ubuntu.com/4149-1/ https://www.debian.org/security/2019/dsa-4544

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5