Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2025-04-14 11:14

Modified

2025-05-20 10:02

Summary

MinIO SFTP authentication bypass due to improperly trusted SSH key

Details

MinIO is a high performance object storage. Starting in RELEASE.2024-06-06T09-36-42Z and prior to RELEASE.2025-02-28T09-55-16Z, a bug in evaluating the trust of the SSH key used in an SFTP connection to MinIO allows authentication bypass and unauthorized data access. On a MinIO server with SFTP access configured and using LDAP as an external identity provider, MinIO supports SSH key based authentication for SFTP connections when the user has the sshPublicKey attribute set in their LDAP server. The server trusts the client's key only when the public key is the same as the sshPublicKey attribute. Due to the bug, when the user has no sshPublicKey property in LDAP, the server ends up trusting the key allowing the client to perform any FTP operations allowed by the MinIO access policies associated with the LDAP user (or any of their groups). Three requirements must be met in order to exploit the vulnerability. First, the MinIO server must be configured to allow SFTP access and use LDAP as an external identity provider. Second, the attacker must have knowledge of an LDAP username that does not have the sshPublicKey property set. Third, such an LDAP username or one of their groups must also have some MinIO access policy configured. When this bug is successfully exploited, the attacker can perform any FTP operations (i.e. reading, writing, deleting and listing objects) allowed by the access policy associated with the LDAP user account (and their groups). Version 1.2.0 fixes the issue.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "minio",
        "purl": "pkg:bitnami/minio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2024.6.6"
            },
            {
              "fixed": "2025.2.28"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-27414"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:minio:minio:*:*:*:*:*:go:*:*"
    ],
    "severity": "Medium"
  },
  "details": "MinIO is a high performance object storage. Starting in RELEASE.2024-06-06T09-36-42Z and prior to \nRELEASE.2025-02-28T09-55-16Z, a bug in evaluating the trust of the SSH key used in an SFTP connection to MinIO allows authentication bypass and unauthorized data access. On a MinIO server with SFTP access configured and using LDAP as an external identity provider, MinIO supports SSH key based authentication for SFTP connections when the user has the `sshPublicKey` attribute set in their LDAP server. The server trusts the client\u0027s key only when the public key is the same as the `sshPublicKey` attribute. Due to the bug, when the user has no `sshPublicKey` property in LDAP, the server ends up trusting the key allowing the client to perform any FTP operations allowed by the MinIO access policies associated with the LDAP user (or any of their groups). Three requirements must be met in order to exploit the vulnerability. First, the MinIO server must be configured to allow SFTP access and use LDAP as an external identity provider. Second, the attacker must have knowledge of an LDAP username that does not have the `sshPublicKey` property set. Third, such an LDAP username or one of their groups must also have some MinIO access policy configured. When this bug is successfully exploited, the attacker can perform any FTP operations (i.e. reading, writing, deleting and listing objects) allowed by the access policy associated with the LDAP user account (and their groups). Version 1.2.0 fixes the issue.",
  "id": "BIT-minio-2025-27414",
  "modified": "2025-05-20T10:02:07.006Z",
  "published": "2025-04-14T11:14:42.946Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/commit/4c71f1b4ec0fb2a473ddaac18c20ec9e63f267ec"
    },
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/commit/91e1487de45720753c9e9e4c02b1bd16b7e452fa"
    },
    {
      "type": "WEB",
      "url": "https://github.com/minio/minio/security/advisories/GHSA-wc79-7x8x-2p58"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27414"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "MinIO SFTP authentication bypass due to improperly trusted SSH key"
}

CVE-2025-27414 (GCVE-0-2025-27414)

Vulnerability from cvelistv5 – Published: 2025-02-28 21:06 – Updated: 2025-03-04 20:03

Title

MinIO SFTP authentication bypass due to improperly trusted SSH key

Summary

MinIO is a high performance object storage. Starting in RELEASE.2024-06-06T09-36-42Z and prior to RELEASE.2025-02-28T09-55-16Z, a bug in evaluating the trust of the SSH key used in an SFTP connection to MinIO allows authentication bypass and unauthorized data access. On a MinIO server with SFTP access configured and using LDAP as an external identity provider, MinIO supports SSH key based authentication for SFTP connections when the user has the `sshPublicKey` attribute set in their LDAP server. The server trusts the client's key only when the public key is the same as the `sshPublicKey` attribute. Due to the bug, when the user has no `sshPublicKey` property in LDAP, the server ends up trusting the key allowing the client to perform any FTP operations allowed by the MinIO access policies associated with the LDAP user (or any of their groups). Three requirements must be met in order to exploit the vulnerability. First, the MinIO server must be configured to allow SFTP access and use LDAP as an external identity provider. Second, the attacker must have knowledge of an LDAP username that does not have the `sshPublicKey` property set. Third, such an LDAP username or one of their groups must also have some MinIO access policy configured. When this bug is successfully exploited, the attacker can perform any FTP operations (i.e. reading, writing, deleting and listing objects) allowed by the access policy associated with the LDAP user account (and their groups). Version 1.2.0 fixes the issue.

Severity ?

4.6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M

References

URL

Tags

	https://github.com/minio/minio/security/advisorie…	x_refsource_CONFIRM
	https://github.com/minio/minio/commit/4c71f1b4ec0…	x_refsource_MISC
	https://github.com/minio/minio/commit/91e1487de45…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	minio	minio	Affected: >= RELEASE.2024-06-06T09-36-42Z, < RELEASE.2025-02-28T09-55-16Z

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-27414",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-04T20:03:33.343916Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-04T20:03:45.107Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "minio",
          "vendor": "minio",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= RELEASE.2024-06-06T09-36-42Z, \u003c RELEASE.2025-02-28T09-55-16Z"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MinIO is a high performance object storage. Starting in RELEASE.2024-06-06T09-36-42Z and prior to \nRELEASE.2025-02-28T09-55-16Z, a bug in evaluating the trust of the SSH key used in an SFTP connection to MinIO allows authentication bypass and unauthorized data access. On a MinIO server with SFTP access configured and using LDAP as an external identity provider, MinIO supports SSH key based authentication for SFTP connections when the user has the `sshPublicKey` attribute set in their LDAP server. The server trusts the client\u0027s key only when the public key is the same as the `sshPublicKey` attribute. Due to the bug, when the user has no `sshPublicKey` property in LDAP, the server ends up trusting the key allowing the client to perform any FTP operations allowed by the MinIO access policies associated with the LDAP user (or any of their groups). Three requirements must be met in order to exploit the vulnerability. First, the MinIO server must be configured to allow SFTP access and use LDAP as an external identity provider. Second, the attacker must have knowledge of an LDAP username that does not have the `sshPublicKey` property set. Third, such an LDAP username or one of their groups must also have some MinIO access policy configured. When this bug is successfully exploited, the attacker can perform any FTP operations (i.e. reading, writing, deleting and listing objects) allowed by the access policy associated with the LDAP user account (and their groups). Version 1.2.0 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 4.6,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-02-28T21:06:58.155Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/minio/minio/security/advisories/GHSA-wc79-7x8x-2p58",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/minio/minio/security/advisories/GHSA-wc79-7x8x-2p58"
        },
        {
          "name": "https://github.com/minio/minio/commit/4c71f1b4ec0fb2a473ddaac18c20ec9e63f267ec",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/minio/minio/commit/4c71f1b4ec0fb2a473ddaac18c20ec9e63f267ec"
        },
        {
          "name": "https://github.com/minio/minio/commit/91e1487de45720753c9e9e4c02b1bd16b7e452fa",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/minio/minio/commit/91e1487de45720753c9e9e4c02b1bd16b7e452fa"
        }
      ],
      "source": {
        "advisory": "GHSA-wc79-7x8x-2p58",
        "discovery": "UNKNOWN"
      },
      "title": "MinIO SFTP authentication bypass due to improperly trusted SSH key"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-27414",
    "datePublished": "2025-02-28T21:06:58.155Z",
    "dateReserved": "2025-02-24T15:51:17.268Z",
    "dateUpdated": "2025-03-04T20:03:45.107Z",
    "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.

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Vulnerability from bitnami_vulndb

CVE-2025-27414 (GCVE-0-2025-27414)

Tags

Sightings

Nomenclature