CVE-2020-25829

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).

Se ha encontrado un problema en PowerDNS Recursor versiones anteriores a 4.1.18, versiones 4.2.x anteriores a 4.2.5 y versiones 4.3.x anteriores a 4.3.5. Un atacante remoto puede causar que los registros en caché para un nombre dado sean actualizados al estado de comprobación de Bogus DNSSEC, en lugar de su estado DNSSEC Secure real, por medio de una consulta ANY de DNS. Esto resulta en una denegación de servicio para la instalación que siempre comprueba (dnssec=validate) y para los clientes que requieren comprobación cuando la comprobación bajo demanda está habilitada (dnssec=process)

*Credits: N/A

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

2020-09-23 CVE Reserved
2020-10-16 CVE Published
2024-08-04 CVE Updated
2024-08-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html	2022-06-15
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html	2022-06-15
https://security.gentoo.org/glsa/202012-19	2022-06-15

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"				< 4.1.18 Search vendor "Powerdns" for product "Recursor" and version " < 4.1.18"		-		Affected
Powerdns Search vendor "Powerdns"		Recursor Search vendor "Powerdns" for product "Recursor"				>= 4.2.0 < 4.2.5 Search vendor "Powerdns" for product "Recursor" and version " >= 4.2.0 < 4.2.5"		-		Affected
Powerdns Search vendor "Powerdns"		Recursor Search vendor "Powerdns" for product "Recursor"				>= 4.3.0 < 4.3.5 Search vendor "Powerdns" for product "Recursor" and version " >= 4.3.0 < 4.3.5"		-		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"		Backports Sle Search vendor "Opensuse" for product "Backports Sle"				15.0 Search vendor "Opensuse" for product "Backports Sle" and version "15.0"		sp2		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
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.2 Search vendor "Opensuse" for product "Leap" and version "15.2"		-		Affected