CVE-2019-3871

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability was found in PowerDNS Authoritative Server before 4.0.7 and before 4.1.7. An insufficient validation of data coming from the user when building a HTTP request from a DNS query in the HTTP Connector of the Remote backend, allowing a remote user to cause a denial of service by making the server connect to an invalid endpoint, or possibly information disclosure by making the server connect to an internal endpoint and somehow extracting meaningful information about the response

Se ha descubierto una vulnerabilidad en PowerDNS Authoritative Server, en versiones anteriores a la 4.0.7 y la 4.1.7. Una validación de datos insuficiente de datos provenientes del usuario al construir una petición HTTP desde una consulta DNS en el conector HTTP del backend remoto permite que un usuario remoto provoque una denegación de servicio haciendo que el servidor se conecte a un endpoint inválido. Además, también podría provocar una posible divulgación de información haciendo que el servidor se conecte a un endpoint interno y, de alguna forma, extrayendo información importante sobre la respuesta.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-01-03 CVE Reserved
2019-03-21 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-09-01 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (10)

URL	Tag	Source
http://www.securityfocus.com/bid/107491	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00039.html	Mailing List
https://seclists.org/bugtraq/2019/Apr/8	Mailing List

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2019/03/18/4	2024-08-04
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3871	2024-08-04

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00022.html	2023-11-07
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWUHF6MRSQ3YO7UUISGLV7MXCAGBW2VD	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ROFI6OTWF4GKONNSNEDUCW6LVSSEBZNF	2023-11-07
https://www.debian.org/security/2019/dsa-4424	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Powerdns Search vendor "Powerdns"		Authoritative Server Search vendor "Powerdns" for product "Authoritative Server"				< 4.0.7 Search vendor "Powerdns" for product "Authoritative Server" and version " < 4.0.7"		-		Affected
Powerdns Search vendor "Powerdns"		Authoritative Server Search vendor "Powerdns" for product "Authoritative Server"				>= 4.1.0 < 4.1.7 Search vendor "Powerdns" for product "Authoritative Server" and version " >= 4.1.0 < 4.1.7"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				28 Search vendor "Fedoraproject" for product "Fedora" and version "28"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				29 Search vendor "Fedoraproject" for product "Fedora" and version "29"		-		Affected