// For flags

CVE-2020-10995

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue.

PowerDNS Recursor versiones desde 4.1.0 hasta 4.3.0 e incluyéndola, no defiende suficientemente contra los ataques de amplificación. Ha sido encontrado un problema en el protocolo DNS que permite a las partes maliciosas usar servicios DNS recursivos para atacar servidores de nombres autorizados por terceros. El ataque usa una respuesta diseñada por un servidor de nombres autorizados para amplificar el tráfico resultante entre los servidores de nombres recursivos y otros. Ambos tipos de servicio pueden sufrir un rendimiento degradado como un efecto. Esto es activado por subdominios aleatorios en NSDNAME en registros NS. PowerDNS Recursor versiones 4.1.16, 4.2.2 y 4.3.1, contienen una mitigación para limitar el impacto de este problema del protocolo DNS.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-03-27 CVE Reserved
  • 2020-05-19 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-09-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Powerdns
Search vendor "Powerdns"
Recursor
Search vendor "Powerdns" for product "Recursor"
>= 4.1.0 <= 4.3.0
Search vendor "Powerdns" for product "Recursor" and version " >= 4.1.0 <= 4.3.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
31
Search vendor "Fedoraproject" for product "Fedora" and version "31"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
32
Search vendor "Fedoraproject" for product "Fedora" and version "32"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Opensuse
Search vendor "Opensuse"
Backports Sle
Search vendor "Opensuse" for product "Backports Sle"
15.0
Search vendor "Opensuse" for product "Backports Sle" and version "15.0"
sp1
Affected
Opensuse
Search vendor "Opensuse"
Leap
Search vendor "Opensuse" for product "Leap"
15.1
Search vendor "Opensuse" for product "Leap" and version "15.1"
-
Affected