{
  "GSD": {
    "alias": "CVE-2021-34422",
    "description": "The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution.",
    "id": "GSD-2021-34422"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-34422"
      ],
      "details": "The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution.",
      "id": "GSD-2021-34422",
      "modified": "2023-12-13T01:23:14.032676Z",
      "schema_version": "1.4.0"
    }
  },
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      "CVE_data_meta": {
        "AKA": "Zoom Communications Inc",
        "ASSIGNER": "security@zoom.us",
        "DATE_PUBLIC": "2021-11-12T17:00:00.000Z",
        "ID": "CVE-2021-34422",
        "STATE": "PUBLIC",
        "TITLE": "Path traversal of file names in Keybase Client for Windows"
      },
      "affects": {
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            {
              "product": {
                "product_data": [
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                    "version": {
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                          "version_affected": "\u003c",
                          "version_value": "5.7.0"
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              "vendor_name": "Zoom Video Communications Inc"
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        }
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            "value": "The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Relative Path Traversal"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://explore.zoom.us/en/trust/security/security-bulletin",
            "refsource": "MISC",
            "url": "https://explore.zoom.us/en/trust/security/security-bulletin"
          }
        ]
      },
      "source": {
        "discovery": "USER"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
          {
            "children": [],
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              {
                "cpe23Uri": "cpe:2.3:a:keybase:keybase:*:*:*:*:*:windows:*:*",
                "cpe_name": [],
                "versionEndExcluding": "5.7.0",
                "vulnerable": true
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            ],
            "operator": "OR"
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      "cve": {
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          "ID": "CVE-2021-34422"
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              "value": "The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution."
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                  "value": "CWE-22"
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              "name": "https://explore.zoom.us/en/trust/security/security-bulletin",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://explore.zoom.us/en/trust/security/security-bulletin"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
            "version": "2.0"
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          "exploitabilityScore": 6.8,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseScore": 9.0,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
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          "exploitabilityScore": 2.3,
          "impactScore": 6.0
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      },
      "lastModifiedDate": "2021-11-16T19:42Z",
      "publishedDate": "2021-11-11T23:15Z"
    }
  }
}