// For flags

CVE-2018-5739

Failure to release memory may exhaust system resources

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 extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library facilities. In order to support multiple requests simultaneously, Kea 1.4 added a callout handle store but unfortunately the initial implementation of this store does not properly free memory in every case. Hooks which make use of query4 or query6 parameters in their callouts can leak memory, resulting in the eventual exhaustion of available memory and subsequent failure of the server process. Affects Kea DHCP 1.4.0.

Una extensión de las capacidades de enlace que debutó en Kea 1.4.0 introdujo una fuga de memoria para los operadores que emplean ciertas características de la biblioteca de enlaces. Para poder soportar múltiples peticiones de forma simultánea, Kea 1.4 introdujo un almacén de manejo de llamadas pero, desafortunadamente, la implementación inicial de este almacén no libera memoria correctamente en cada caso. Los enlaces que emplean los parámetros query4 o query6 en sus llamadas pueden filtrar memoria, lo que resulta en el agotamiento de la memoria disponible y el el subsiguiente error del proceso del servidor. Afecta a Kea DHCP 1.4.0.

*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
Adjacent
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
  • 2018-01-17 CVE Reserved
  • 2019-01-16 CVE Published
  • 2024-09-17 CVE Updated
  • 2024-09-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-772: Missing Release of Resource after Effective Lifetime
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://kb.isc.org/docs/aa-01626 2019-10-09
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Isc
Search vendor "Isc"
 Kea
Search vendor "Isc" for product "Kea"
 1.4.0
Search vendor "Isc" for product "Kea" and version "1.4.0"
-
Affected