fkie_nvd - fkie_cve-2025-37730

fkie_cve-2025-37730

Vulnerability from fkie_nvd

Published

2025-05-06 18:15

Modified

2025-05-07 14:13

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Summary

Improper certificate validation in Logstash's TCP output could lead to a man-in-the-middle (MitM) attack in “client” mode, as hostname verification in TCP output was not being performed when the ssl_verification_mode => full was set.

References

▶	URL	Tags
	bressers@elastic.co	https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869

Impacted products

	Vendor	Product	Version

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper certificate validation in Logstash\u0027s TCP output could lead to a man-in-the-middle (MitM) attack in \u201cclient\u201d mode, as hostname verification in TCP output was not being performed when the ssl_verification_mode =\u003e full was set."
    },
    {
      "lang": "es",
      "value": "Una validaci\u00f3n incorrecta del certificado en la salida TCP de Logstash podr\u00eda provocar un ataque de intermediario (MitM) en modo \u201cclient\u201d, ya que no se estaba realizando la verificaci\u00f3n del nombre de host en la salida TCP cuando se configuraba ssl_verification_mode =\u0026gt; full."
    }
  ],
  "id": "CVE-2025-37730",
  "lastModified": "2025-05-07T14:13:20.483",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 4.2,
        "source": "bressers@elastic.co",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-05-06T18:15:38.410",
  "references": [
    {
      "source": "bressers@elastic.co",
      "url": "https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869"
    }
  ],
  "sourceIdentifier": "bressers@elastic.co",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ],
      "source": "bressers@elastic.co",
      "type": "Secondary"
    }
  ]
}

CVE-2025-37730 (GCVE-0-2025-37730)

Vulnerability from cvelistv5

Published

2025-05-06 17:29

Modified

2025-05-06 17:51

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

CWE

CWE-295

Summary

Improper certificate validation in Logstash's TCP output could lead to a man-in-the-middle (MitM) attack in “client” mode, as hostname verification in TCP output was not being performed when the ssl_verification_mode => full was set.

References

►

URL

Tags

https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869

Impacted products

	Vendor	Product	Version
	Elastic	Logstash	Version: 8.0.0 ≤ Version: 8.18.0 ≤ Version: 9.0.0 ≤

Show details on NVD website

To clipboard

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  "containers": {
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      {
        "metrics": [
          {
            "other": {
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                "id": "CVE-2025-37730",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-06T17:51:38.262496Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
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        "providerMetadata": {
          "dateUpdated": "2025-05-06T17:51:59.631Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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          "repo": "https://github.com/elastic/logstash",
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              "version": "8.18.0",
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            },
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              "lessThan": "9.0.1",
              "status": "affected",
              "version": "9.0.0",
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            }
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      ],
      "descriptions": [
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              "type": "text/html",
              "value": "\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003eImproper certificate validation in Logstash\u0027s TCP output could lead to a man-in-the-middle (MitM) attack in \u201cclient\u201d mode, as hostname verification in TCP output was not being performed when the \u003c/span\u003e\u003cspan style=\"background-color: transparent;\"\u003essl_verification_mode =\u0026gt; full\u003c/span\u003e\u003cspan style=\"background-color: transparent;\"\u003e was set.\u003c/span\u003e\u003c/p\u003e"
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
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            "userInteraction": "NONE",
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        "orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
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        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Logstash Improper Certificate Validation in TCP output",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
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    "datePublished": "2025-05-06T17:29:07.189Z",
    "dateReserved": "2025-04-16T03:24:04.510Z",
    "dateUpdated": "2025-05-06T17:51:59.631Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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