fkie_nvd - fkie_cve-2021-34420

fkie_cve-2021-34420

Vulnerability from fkie_nvd

Published

2021-11-11 23:15

Modified

2024-11-21 06:10

Severity ?

4.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Summary

The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer’s computer.

References

URL	Tags
security@zoom.us	https://explore.zoom.us/en/trust/security/security-bulletin	Vendor Advisory
security@zoom.us	https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://explore.zoom.us/en/trust/security/security-bulletin	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e	Third Party Advisory

Impacted products

	Vendor	Product	Version
	zoom	zoom_client_for_meetings	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zoom:zoom_client_for_meetings:*:*:*:*:*:windows:*:*",
              "matchCriteriaId": "CB0A66B6-7584-4017-87B5-D1937E16C7CB",
              "versionEndExcluding": "5.4.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer\u2019s computer."
    },
    {
      "lang": "es",
      "value": "El instalador de Zoom Client for Meetings para Windows anterior a la versi\u00f3n 5.5.4 no verifica correctamente la firma de los archivos con extensiones .msi, .ps1 y .bat. Esto podr\u00eda dar lugar a que un actor malintencionado instalara software malicioso en el ordenador de un cliente"
    }
  ],
  "id": "CVE-2021-34420",
  "lastModified": "2024-11-21T06:10:21.993",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security@zoom.us",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-11-11T23:15:09.827",
  "references": [
    {
      "source": "security@zoom.us",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://explore.zoom.us/en/trust/security/security-bulletin"
    },
    {
      "source": "security@zoom.us",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://explore.zoom.us/en/trust/security/security-bulletin"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"
    }
  ],
  "sourceIdentifier": "security@zoom.us",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

cve-2021-34420

Vulnerability from cvelistv5

Published

2021-11-11 22:59

Modified

2024-09-16 21:03

Severity ?

4.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Summary

References

▼	URL	Tags
	https://explore.zoom.us/en/trust/security/security-bulletin	x_refsource_MISC
	https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Zoom Video Communications Inc	Zoom Client for Meetings for Windows	Version: unspecified < 5.5.4

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:12:50.184Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://explore.zoom.us/en/trust/security/security-bulletin"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Zoom Client for Meetings for Windows",
          "vendor": "Zoom Video Communications Inc",
          "versions": [
            {
              "lessThan": "5.5.4",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Laurent Delosieres of ManoMano"
        }
      ],
      "datePublic": "2021-11-12T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer\u2019s computer."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-02T18:20:33",
        "orgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351",
        "shortName": "Zoom"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://explore.zoom.us/en/trust/security/security-bulletin"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"
        }
      ],
      "source": {
        "discovery": "USER"
      },
      "title": "Zoom Windows installation executable signature bypass",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "AKA": "Zoom Communications Inc",
          "ASSIGNER": "security@zoom.us",
          "DATE_PUBLIC": "2021-11-12T17:00:00.000Z",
          "ID": "CVE-2021-34420",
          "STATE": "PUBLIC",
          "TITLE": "Zoom Windows installation executable signature bypass"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Zoom Client for Meetings for Windows",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "5.5.4"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Zoom Video Communications Inc"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Laurent Delosieres of ManoMano"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer\u2019s computer."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Improper Verification of Cryptographic Signature"
                }
              ]
            }
          ]
        },
        "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"
            },
            {
              "name": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e",
              "refsource": "MISC",
              "url": "https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e"
            }
          ]
        },
        "source": {
          "discovery": "USER"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351",
    "assignerShortName": "Zoom",
    "cveId": "CVE-2021-34420",
    "datePublished": "2021-11-11T22:59:18.504250Z",
    "dateReserved": "2021-06-09T00:00:00",
    "dateUpdated": "2024-09-16T21:03:43.509Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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