// For flags

CVE-2020-10030

 

Severity Score

8.8
*CVSS v3.1

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 Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's hostname) to cause disclosure of uninitialized memory content via a stack-based out-of-bounds read. It only occurs on systems where gethostname() does not have '\0' termination of the returned string if the hostname is larger than the supplied buffer. (Linux systems are not affected because the buffer is always large enough. OpenBSD systems are not affected because the returned hostname always has '\0' termination.) Under some conditions, this issue can lead to the writing of one '\0' byte out-of-bounds on the stack, causing a denial of service or possibly arbitrary code execution.

Se ha detectado un problema en PowerDNS Recursor versiones 4.1.0 hasta 4.3.0 en incluyéndola. Permite un atacante (con suficientes privilegios para cambiar el nombre de host del sistema) causar una divulgación del contenido de la memoria no inicializada por medio de una lectura fuera de límites en la región stack de la memoria. Solo se presenta en sistemas donde la función gethostname() no contiene la terminación "\0" de la cadena devuelta si el nombre de host es mayor que el búfer suministrado. (Los sistemas Linux no están afectados porque el búfer siempre es lo suficientemente grande. Los sistemas OpenBSD no están afectados porque el nombre de host devuelto siempre presenta una terminación "\0".) Bajo algunas condiciones, este problema puede conllevar a una escritura de un byte '\ 0' fuera de los límites en la pila, causando una denegación de servicio o posiblemente una ejecución de código arbitraria.

*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
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-03-04 CVE Reserved
  • 2020-05-19 CVE Published
  • 2024-03-23 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
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