gsd-2021-28133
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Zoom through 5.5.4 sometimes allows attackers to read private information on a participant's screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue.
Aliases
Aliases
CVE-2021-28133


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-28133",
    "description": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant\u0027s screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue.",
    "id": "GSD-2021-28133",
    "references": [
      "https://packetstormsecurity.com/files/cve/CVE-2021-28133"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-28133"
      ],
      "details": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant\u0027s screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue.",
      "id": "GSD-2021-28133",
      "modified": "2023-12-13T01:23:28.747225Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-28133",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant\u0027s screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt",
            "refsource": "MISC",
            "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"
          },
          {
            "name": "https://zoom.us/trust/security/security-bulletin",
            "refsource": "MISC",
            "url": "https://zoom.us/trust/security/security-bulletin"
          },
          {
            "name": "https://www.youtube.com/watch?v=SonmmgQlLzg",
            "refsource": "MISC",
            "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"
          },
          {
            "name": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133",
            "refsource": "MISC",
            "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"
          },
          {
            "name": "20210319 [SYSS-2020-044]: Zoom - Exposure of Resource to Wrong Sphere (CWE-668) (CVE-2021-28133)",
            "refsource": "FULLDISC",
            "url": "http://seclists.org/fulldisclosure/2021/Mar/48"
          },
          {
            "name": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html",
            "refsource": "MISC",
            "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"
          },
          {
            "name": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html",
            "refsource": "MISC",
            "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "5.5.4",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-28133"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Zoom through 5.5.4 sometimes allows attackers to read private information on a participant\u0027s screen, even though the participant never attempted to share the private part of their screen. When a user shares a specific application window via the Share Screen functionality, other meeting participants can briefly see contents of other application windows that were explicitly not shared. The contents of these other windows can (for instance) be seen for a short period of time when they overlay the shared window and get into focus. (An attacker can, of course, use a separate screen-recorder application, unsupported by Zoom, to save all such contents for later replays and analysis.) Depending on the unintentionally shared data, this short exposure of screen contents may be a more or less severe security issue."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-200"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-044.txt"
            },
            {
              "name": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.syss.de/pentest-blog/syss-2020-044-sicherheitsproblem-in-screen-sharing-funktionalitaet-von-zoom-cve-2021-28133"
            },
            {
              "name": "https://zoom.us/trust/security/security-bulletin",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://zoom.us/trust/security/security-bulletin"
            },
            {
              "name": "https://www.youtube.com/watch?v=SonmmgQlLzg",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.youtube.com/watch?v=SonmmgQlLzg"
            },
            {
              "name": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://thehackernews.com/2021/03/new-zoom-screen-sharing-bug-lets-other.html"
            },
            {
              "name": "20210319 [SYSS-2020-044]: Zoom - Exposure of Resource to Wrong Sphere (CWE-668) (CVE-2021-28133)",
              "refsource": "FULLDISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "http://seclists.org/fulldisclosure/2021/Mar/48"
            },
            {
              "name": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "http://packetstormsecurity.com/files/161897/Zoom-5.4.3-54779.1115-5.5.4-13142.0301-Information-Disclosure.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2021-03-26T13:20Z",
      "publishedDate": "2021-03-18T14:15Z"
    }
  }
}


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