Knot Resolver up to 4.0.x DNS Resolver input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Knot Resolver up to 4.0.x. Affected by this issue is some unknown functionality of the component DNS Resolver. Such manipulation leads to input validation. This vulnerability is traded as CVE-2019-10191. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Knot Resolver up to 4.0.x. It has been rated as critical. Affected by this issue is an unknown function of the component DNS Resolver. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade DNSSEC-secure domains to DNSSEC-insecure state, opening possibility of domain hijack using attacks against insecure DNS protocol.

The weakness was shared 07/16/2019 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2019-10191 since 03/27/2019. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 207977 (Ubuntu 20.04 LTS : Knot Resolver vulnerabilities (USN-7047-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.1.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (207977). The entry VDB-138193 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 6.3
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 207977
Nessus Name: Ubuntu 20.04 LTS : Knot Resolver vulnerabilities (USN-7047-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Resolver 4.1.0

Timelineinfo

03/27/2019 🔍
07/16/2019 +111 days 🔍
07/17/2019 +1 days 🔍
10/02/2024 +1904 days 🔍

Sourcesinfo

Advisory: FEDORA-2019-20f95b0b39
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-10191 (🔍)
GCVE (CVE): GCVE-0-2019-10191
GCVE (VulDB): GCVE-100-138194
See also: 🔍

Entryinfo

Created: 07/17/2019 22:29
Updated: 10/02/2024 07:13
Changes: 07/17/2019 22:29 (59), 07/07/2020 16:15 (1), 11/01/2023 07:12 (4), 11/01/2023 07:17 (12), 10/02/2024 07:13 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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