// For flags

CVE-2016-7068

 

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.

Se ha descubierto un problema en PowerDNS en versiones anteriores a la 3.4.11 y 4.0.2, y PowerDNS recursor en versiones anteriores a la 3.7.4 y 4.0.4, que permite que un atacante no autenticado remoto provoque una carga de uso de CPU anormal en el servidor de PowerDNS mediante el envío de consultas DNS manipuladas, lo que podría resultar en una denegación de servicio (DoS) parcial si el sistema se sobrecarga. Este problema se basa en el hecho de que el servidor de PowerDNS analiza todos los registros presentes en una consulta, independientemente de si se necesitan o incluso si son legítimos. Una consulta especialmente manipulada que contiene un gran número de registros puede emplearse para aprovecharse de este comportamiento.

*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
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-08-23 CVE Reserved
  • 2017-01-15 CVE Published
  • 2023-09-05 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • 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"
 Authoritative
Search vendor "Powerdns" for product "Authoritative"
 < 3.4.11
Search vendor "Powerdns" for product "Authoritative" and version " < 3.4.11"
-
Affected
Powerdns
Search vendor "Powerdns"
 Authoritative
Search vendor "Powerdns" for product "Authoritative"
 >= 4.0.0 < 4.0.2
Search vendor "Powerdns" for product "Authoritative" and version " >= 4.0.0 < 4.0.2"
-
Affected
Powerdns
Search vendor "Powerdns"
 Recursor
Search vendor "Powerdns" for product "Recursor"
 < 3.7.4
Search vendor "Powerdns" for product "Recursor" and version " < 3.7.4"
-
Affected
Powerdns
Search vendor "Powerdns"
 Recursor
Search vendor "Powerdns" for product "Recursor"
 >= 4.0.0 < 4.0.4
Search vendor "Powerdns" for product "Recursor" and version " >= 4.0.0 < 4.0.4"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected