CVE-2019-19331

Published: Dic 16, 2019 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2019-8952 Aliases: GSD-2019-19331
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
MEDIUM 5,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: none
Integrity: none
Availability: partial

Description

AI Translation Available

knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0031
Percentile
0,5th
Updated

EPSS Score Trend (Last 90 Days)

404

Improper Resource Shutdown or Release

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Other Confidentiality
Potential Impacts:
Dos: Resource Consumption (Other) Varies By Context Read Application Data
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Medium
View CWE Details
407

Inefficient Algorithmic Complexity

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Low
View CWE Details
Operating System

Debian Linux by Debian

Product Information
Vendor Debian
Product Debian Linux
Version 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Knot Resolver by Nic

Product Information
Vendor Nic
Product Knot Resolver
Version Range Affected
To 4.3.0 (exclusive)
cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331
Exploit Issue Tracking Patch
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331
https://lists.debian.org/debian-lts-announce/2024/04/msg000…
https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html
https://www.knot-resolver.cz/2019-12-04-knot-resolver-4.3.0…
Release Notes Vendor Advisory
https://www.knot-resolver.cz/2019-12-04-knot-resolver-4.3.0.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331
Exploit Issue Tracking Patch
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331
https://lists.debian.org/debian-lts-announce/2024/04/msg000…
https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html
https://www.knot-resolver.cz/2019-12-04-knot-resolver-4.3.0…
Release Notes Vendor Advisory
https://www.knot-resolver.cz/2019-12-04-knot-resolver-4.3.0.html