Vulnerability Name:

CVE-2019-16866 (CCN-168591)

Assigned:2019-09-25
Published:2019-09-25
Updated:2020-08-24
Summary: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 v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-755
CWE-908
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-16866

Source: XF
Type: UNKNOWN
unbound-cve201916866-dos(168591)

Source: CCN
Type: Unbound GIT Repository
Unbound

Source: MISC
Type: Product, Release Notes
https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog

Source: FEDORA
Type: UNKNOWN
FEDORA-2019-e99b716a92

Source: FEDORA
Type: UNKNOWN
FEDORA-2019-0418c12a36

Source: MISC
Type: Patch, Vendor Advisory
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt

Source: BUGTRAQ
Type: UNKNOWN
20191016 [SECURITY] [DSA 4544-1] unbound security update

Source: UBUNTU
Type: Third Party Advisory
USN-4149-1

Source: DEBIAN
Type: UNKNOWN
DSA-4544

Source: CCN
Type: IBM Security Bulletin 6214488 (Vyatta 5600)
Vyatta 5600 vRouter Software Patches - Release 1801-ze

Source: CCN
Type: IBM Security Bulletin 6853463 (Robotic Process Automation for Cloud Pak)
Multiple Security Vulnerabilities may affect IBM Robotic Process Automation for Cloud Pak.

Vulnerable Configuration:Configuration 1:
  • cpe:/a:nlnetlabs:unbound:*:*:*:*:*:*:*:* (Version < 1.9.4)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:nlnetlabs:unbound:1.9.3:-:*:*:*:*:*:*
  • AND
  • cpe:/h:ibm:vyatta_5600:*:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation_for_cloud_pak:21.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation_for_cloud_pak:21.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation_for_cloud_pak:21.0.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation_for_cloud_pak:21.0.5:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation_for_cloud_pak:21.0.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:112887
    P
    		libunbound8-1.13.2-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106347
    P
    		libunbound8-1.13.2-1.2 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.disco:def:2019168660000000
    V
    		CVE-2019-16866 on Ubuntu 19.04 (disco) - medium.
    2019-10-03
    oval:com.ubuntu.bionic:def:2019168660000000
    V
    		CVE-2019-16866 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-10-03
    oval:com.ubuntu.xenial:def:2019168660000000
    V
    		CVE-2019-16866 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-10-03
    BACK
    nlnetlabs unbound *
    canonical ubuntu linux 19.04
    nlnetlabs unbound 1.9.3 -
    ibm vyatta 5600 *
    ibm robotic process automation for cloud pak 21.0.1
    ibm robotic process automation for cloud pak 21.0.2
    ibm robotic process automation for cloud pak 21.0.3
    ibm robotic process automation for cloud pak 21.0.5
    ibm robotic process automation for cloud pak 21.0.4