Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2025-05-08 05:42

Modified

2025-05-20 10:02

Summary

Logstash Improper Certificate Validation in TCP output

Details

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.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "logstash",
        "purl": "pkg:bitnami/logstash"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.18.1"
            },
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.0.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-37730"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:elastic:logstash:*:*:*:*:*:ruby:*:*"
    ],
    "severity": "Medium"
  },
  "details": "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.",
  "id": "BIT-logstash-2025-37730",
  "modified": "2025-05-20T10:02:07.006Z",
  "published": "2025-05-08T05:42:10.346Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37730"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Logstash Improper Certificate Validation in TCP output"
}

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

Vulnerability from cvelistv5 – Published: 2025-05-06 17:29 – Updated: 2025-05-06 17:51

Title

Logstash Improper Certificate Validation in TCP output

Summary

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

Assigner

elastic

References

URL

Tags

https://discuss.elastic.co/t/logstash-8-17-6-8-18…

Impacted products

	Vendor	Product	Version
	Elastic	Logstash	Affected: 8.0.0 , < 8.17.6 (semver) Affected: 8.18.0 , < 8.18.1 (semver) Affected: 9.0.0 , < 9.0.1 (semver)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "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"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-06T17:51:59.631Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Logstash",
          "repo": "https://github.com/elastic/logstash",
          "vendor": "Elastic",
          "versions": [
            {
              "lessThan": "8.17.6",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.18.1",
              "status": "affected",
              "version": "8.18.0",
              "versionType": "semver"
            },
            {
              "lessThan": "9.0.1",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
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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"
            }
          ],
          "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."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-94",
          "descriptions": [
            {
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              "value": "CAPEC-94"
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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",
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              "cweId": "CWE-295",
              "description": "CWE-295",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2025-05-06T17:29:07.189Z",
        "orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
        "shortName": "elastic"
      },
      "references": [
        {
          "url": "https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Logstash Improper Certificate Validation in TCP output",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
    "assignerShortName": "elastic",
    "cveId": "CVE-2025-37730",
    "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"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

Vulnerability from bitnami_vulndb

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

Tags

Sightings

Nomenclature