GSD-2020-25200

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
** DISPUTED ** Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design.
Aliases
Aliases
CVE-2020-25200
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{
  "GSD": {
    "alias": "CVE-2020-25200",
    "description": "** DISPUTED ** Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design.",
    "id": "GSD-2020-25200"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-25200"
      ],
      "details": "** DISPUTED ** Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design.",
      "id": "GSD-2020-25200",
      "modified": "2023-12-13T01:21:57.321541Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2020-25200",
        "STATE": "PUBLIC"
      },
      "affects": {
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            "value": "** DISPUTED ** Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design."
          }
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      "references": {
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          {
            "name": "https://pritunl.com",
            "refsource": "MISC",
            "url": "https://pritunl.com"
          },
          {
            "name": "https://pritunl.com/security",
            "refsource": "MISC",
            "url": "https://pritunl.com/security"
          },
          {
            "name": "https://github.com/lukaszstu/pritunl/blob/master/CVE-2020-25200",
            "refsource": "MISC",
            "url": "https://github.com/lukaszstu/pritunl/blob/master/CVE-2020-25200"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "==1.29.2145.25",
          "affected_versions": "Version 1.29.2145.25",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-200",
            "CWE-937"
          ],
          "date": "2021-07-21",
          "description": "Pritunl allows attackers to enumerate valid VPN usernames via a series of `/auth/session` login attempts. Initially, the server will return err However, if the username is valid, then login attempts, the server will start responding with err Invalid usernames will receive err indefinitely.",
          "fixed_versions": [],
          "identifier": "CVE-2020-25200",
          "identifiers": [
            "CVE-2020-25200"
          ],
          "not_impacted": "",
          "package_slug": "pypi/pritunl",
          "pubdate": "2020-10-01",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "Information Exposure",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-25200",
            "https://pritunl.com",
            "https://pritunl.com/security"
          ],
          "uuid": "a9219cb0-1364-4976-a5ba-94636adb7c0c"
        }
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                    "criteria": "cpe:2.3:a:pritunl:pritunl:1.29.2145.25:*:*:*:*:*:*:*",
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        "descriptions": [
          {
            "lang": "en",
            "value": "Pritunl 1.29.2145.25 allows attackers to enumerate valid VPN usernames via a series of /auth/session login attempts. Initially, the server will return error 401. However, if the username is valid, then after 20 login attempts, the server will start responding with error 400. Invalid usernames will receive error 401 indefinitely. Note: This has been disputed by the vendor as not a vulnerability. They argue that this is an intended design"
          },
          {
            "lang": "es",
            "value": "** EN DISPUTA ** Pritunl versi\u00f3n 1.29.2145.25, permite a atacantes enumerar nombres de usuario VPN v\u00e1lidos por medio de una serie de intentos de inicio de sesi\u00f3n de /auth/session. Inicialmente, el servidor devolver\u00e1 el error 401. Sin embargo, si el nombre de usuario es v\u00e1lido, luego de 20 intentos de inicio de sesi\u00f3n, el servidor comenzar\u00e1 a responder con el error 400. Los nombres de usuario no v\u00e1lidos recibir\u00e1n el error 401 de forma indefinida. Nota: Esto ha sido discutido por el vendedor como no una vulnerabilidad. Ellos argumentan que este es un dise\u00f1o previsto"
          }
        ],
        "id": "CVE-2020-25200",
        "lastModified": "2024-04-11T01:07:59.627",
        "metrics": {
          "cvssMetricV2": [
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              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
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              "type": "Primary",
              "userInteractionRequired": false
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                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
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                "baseScore": 5.3,
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                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
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              "impactScore": 1.4,
              "source": "nvd@nist.gov",
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        "published": "2020-10-01T18:15:12.577",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
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              "Third Party Advisory"
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            "url": "https://github.com/lukaszstu/pritunl/blob/master/CVE-2020-25200"
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        "vulnStatus": "Modified",
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                "value": "CWE-203"
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            "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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