FKIE_CVE-2020-26834

Vulnerability from fkie_nvd - Published: 2020-12-09 17:15 - Updated: 2024-11-21 05:20
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Summary
SAP HANA Database, version - 2.0, does not correctly validate the username when performing SAML bearer token-based user authentication. It is possible to manipulate a valid existing SAML bearer token to authenticate as a user whose name is identical to the truncated username for whom the SAML bearer token was issued.
References
cna@sap.comhttps://launchpad.support.sap.com/#/notes/2978768Permissions Required
cna@sap.comhttps://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://launchpad.support.sap.com/#/notes/2978768Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079Vendor Advisory
Impacted products
Vendor Product Version
sap hana_database 2.00
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sap:hana_database:2.00:*:*:*:*:*:*:*",
              "matchCriteriaId": "4C6CA542-7071-48B6-B135-3AE9B4BB1DC5",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SAP HANA Database, version - 2.0, does not correctly validate the username when performing SAML bearer token-based user authentication. It is possible to manipulate a valid existing SAML bearer token to authenticate as a user whose name is identical to the truncated username for whom the SAML bearer token was issued."
    },
    {
      "lang": "es",
      "value": "SAP HANA Database, versi\u00f3n 2.0, no comprueba correctamente el nombre de usuario cuando lleva a cabo la autenticaci\u00f3n de usuario basada en token de portador SAML. Es posible manipular un token de portador SAML existente v\u00e1lido para autenticarse como un usuario cuyo nombre es id\u00e9ntico al nombre de usuario truncado para el que se emiti\u00f3 el token de portador SAML"
    }
  ],
  "id": "CVE-2020-26834",
  "lastModified": "2024-11-21T05:20:22.010",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "version": "2.0"
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        "exploitabilityScore": 8.0,
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        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
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          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
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          "privilegesRequired": "LOW",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.0"
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        "exploitabilityScore": 1.6,
        "impactScore": 2.5,
        "source": "cna@sap.com",
        "type": "Secondary"
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    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
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        "impactScore": 2.5,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2020-12-09T17:15:31.323",
  "references": [
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      "tags": [
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      "url": "https://launchpad.support.sap.com/#/notes/2978768"
    },
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      "tags": [
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      "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079"
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  "sourceIdentifier": "cna@sap.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "nvd@nist.gov",
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  ]
}


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