CVE-2023-31421

2023-10-2604:15:16

CWE-295

[email protected]

web.nvd.nist.gov

cve-2023-31421

beats

elastic agent

apm server

fleet server

certificate validation

ip address

nvd

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

25.3%

JSON

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.

Affected configurations

NVD

Node

elasticelastic_beatsRange8.0.0–8.9.2

Node

elasticelastic_agentRange8.0.0–8.9.2

Node

elasticapm_serverRange8.0.0–8.9.2

Node

elasticelastic_fleet_serverRange8.0.0–8.9.2

CPENameOperatorVersion
elastic:elastic_beatselastic elastic beatsle8.9.2

CPE	Name	Operator	Version
elastic:elastic_beats	elastic elastic beats	le	8.9.2

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Beats",
    "vendor": "Elastic",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0, 8.9.2"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Elastic Agent",
    "vendor": "Elastic",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0, 8.9.2"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "APM Server",
    "vendor": "Elastic",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0, 8.9.2"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Fleet Server",
    "vendor": "Elastic",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0, 8.9.2"
      }
    ]
  }
]