// For flags

CVE-2019-14834

dnsmasq: memory leak in the create_helper() function in /src/helper.c

Severity Score

3.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.

Se encontró una vulnerabilidad en dnsmasq versiones anteriores a la versión 2.81, donde la pérdida de memoria permite a atacantes remotos causar una denegación de servicio (consumo de memoria) por medio de vectores que implican una creación de respuesta DHCP.

A flaw was found in the Dnsmasq application where a remote attacker can trigger a memory leak by sending specially crafted DHCP responses to the server. A successful attack is dependent on a specific configuration regarding the domain name set into the dnsmasq.conf file. Over time, the memory leak may cause the process to run out of memory and terminate, causing a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-08-10 CVE Reserved
  • 2020-01-07 CVE Published
  • 2023-11-11 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Thekelleys
Search vendor "Thekelleys"
 Dnsmasq
Search vendor "Thekelleys" for product "Dnsmasq"
 < 2.81
Search vendor "Thekelleys" for product "Dnsmasq" and version " < 2.81"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 31
Search vendor "Fedoraproject" for product "Fedora" and version "31"
-
Affected