FKIE_CVE-2023-43650

Vulnerability from fkie_nvd - Published: 2023-09-27 19:15 - Updated: 2025-04-21 14:32
Severity ?
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
JumpServer is an open source bastion host. The verification code for resetting user's password is vulnerable to brute-force attacks due to the absence of rate limiting. JumpServer provides a feature allowing users to reset forgotten passwords. Affected users are sent a 6-digit verification code, ranging from 000000 to 999999, to facilitate the password reset. Although the code is only available in 1 minute, this window potentially allows for up to 1,000,000 validation attempts. This issue has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
References
security-advisories@github.comhttps://github.com/jumpserver/jumpserver/security/advisories/GHSA-mwx4-8fwc-2xvwExploit, Vendor Advisory
security-advisories@github.comhttps://www.sonarsource.com/blog/diving-into-jumpserver-attackers-gateway-to-internal-networks-1-2Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/jumpserver/jumpserver/security/advisories/GHSA-mwx4-8fwc-2xvwExploit, Vendor Advisory
Impacted products
Vendor Product Version
fit2cloud jumpserver *
fit2cloud jumpserver *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AF95C421-E2B7-4251-8BAF-E83A5779A9F0",
              "versionEndExcluding": "2.28.20",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4232B350-4257-43B9-A697-AFA6D8247B1E",
              "versionEndExcluding": "3.7.1",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "JumpServer is an open source bastion host. The verification code for resetting user\u0027s password is vulnerable to brute-force attacks due to the absence of rate limiting. JumpServer provides a feature allowing users to reset forgotten passwords. Affected users are sent a 6-digit verification code, ranging from 000000 to 999999, to facilitate the password reset. Although the code is only available in 1 minute, this window potentially allows for up to 1,000,000 validation attempts. This issue has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability."
    },
    {
      "lang": "es",
      "value": "JumpServer es un host de bastionado de c\u00f3digo abierto. El c\u00f3digo de verificaci\u00f3n para restablecer la contrase\u00f1a del usuario es vulnerable a ataques de fuerza bruta debido a la ausencia de rate limiting. JumpServer proporciona una funci\u00f3n que permite a los usuarios restablecer contrase\u00f1as olvidadas. Los usuarios afectados reciben un c\u00f3digo de verificaci\u00f3n de 6 d\u00edgitos, que va del 000000 al 999999, para facilitar el restablecimiento de la contrase\u00f1a. Aunque el c\u00f3digo s\u00f3lo est\u00e1 disponible en 1 minuto, esta ventana permite potencialmente hasta 1.000.000 de intentos de validaci\u00f3n. Este problema se solucion\u00f3 en las versiones 2.28.20 y 3.7.1. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad."
    }
  ],
  "id": "CVE-2023-43650",
  "lastModified": "2025-04-21T14:32:27.930",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-09-27T19:15:11.927",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-mwx4-8fwc-2xvw"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.sonarsource.com/blog/diving-into-jumpserver-attackers-gateway-to-internal-networks-1-2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-mwx4-8fwc-2xvw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-640"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-640"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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