// For flags

CVE-2023-31421

Beats, Elastic Agent, APM Server, and Fleet Server Improper Certificate Validation issue

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

It was discovered that when acting as TLS clients, Beats, Elastic Agent, APM Server, and Fleet Server did not verify whether the server certificate is valid for the target IP address; however, certificate signature validation is still performed. More specifically, when the client is configured to connect to an IP address (instead of a hostname) it does not validate the server certificate's IP SAN values against that IP address and certificate validation fails, and therefore the connection is not blocked as expected.

Se descubrió que cuando actuaban como Clientes TLS, Beats, Elastic Agent, APM Server y Fleet Server no verificaban si el certificado del servidor es válido para la dirección IP de destino; sin embargo, aún se realiza la validación de la firma del certificado. Más específicamente, cuando el cliente está configurado para conectarse a una dirección IP (en lugar de un nombre de host), no valida los valores IP SAN del certificado del servidor con esa dirección IP y la validación del certificado falla y, por lo tanto, la conexión no se bloquea como se esperaba.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-04-27 CVE Reserved
  • 2023-10-26 CVE Published
  • 2023-11-09 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-295: Improper Certificate Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Elastic
Search vendor "Elastic"
 Elastic Beats
Search vendor "Elastic" for product "Elastic Beats"
 >= 8.0.0 <= 8.9.2
Search vendor "Elastic" for product "Elastic Beats" and version " >= 8.0.0 <= 8.9.2"
-
Affected
Elastic
Search vendor "Elastic"
 Elastic Agent
Search vendor "Elastic" for product "Elastic Agent"
 >= 8.0.0 <= 8.9.2
Search vendor "Elastic" for product "Elastic Agent" and version " >= 8.0.0 <= 8.9.2"
-
Affected
Elastic
Search vendor "Elastic"
 Apm Server
Search vendor "Elastic" for product "Apm Server"
 >= 8.0.0 <= 8.9.2
Search vendor "Elastic" for product "Apm Server" and version " >= 8.0.0 <= 8.9.2"
-
Affected
Elastic
Search vendor "Elastic"
 Elastic Fleet Server
Search vendor "Elastic" for product "Elastic Fleet Server"
 >= 8.0.0 <= 8.9.2
Search vendor "Elastic" for product "Elastic Fleet Server" and version " >= 8.0.0 <= 8.9.2"
-
Affected