GSD-2023-28999

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files.​ This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2023-28999",
    "id": "GSD-2023-28999"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-28999"
      ],
      "details": "Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files.\u200b This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.",
      "id": "GSD-2023-28999",
      "modified": "2023-12-13T01:20:48.962670Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-28999",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "security-advisories",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 3.0.0, \u003c 3.8.0"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 3.13.0, \u003c 3.25.0"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 3.0.5, \u003c 4.8.0"
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          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "LOW",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
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            "description": [
              {
                "cweId": "CWE-325",
                "lang": "eng",
                "value": "CWE-325: Missing Cryptographic Step"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf",
            "refsource": "MISC",
            "url": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf"
          },
          {
            "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8",
            "refsource": "MISC",
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8"
          },
          {
            "name": "https://github.com/nextcloud/desktop/pull/5560",
            "refsource": "MISC",
            "url": "https://github.com/nextcloud/desktop/pull/5560"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-8875-wxww-3rr8",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
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        "nodes": [
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                "cpe23Uri": "cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.8.0",
                "versionStartIncluding": "3.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:iphone_os:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.8.0",
                "versionStartIncluding": "3.0.5",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:android:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.25.0",
                "versionStartIncluding": "3.13.0",
                "vulnerable": true
              }
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            "operator": "OR"
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      "cve": {
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          "ID": "CVE-2023-28999"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files.? This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-311"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Technical Description",
                "Third Party Advisory"
              ],
              "url": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf"
            },
            {
              "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8"
            },
            {
              "name": "https://github.com/nextcloud/desktop/pull/5560",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://github.com/nextcloud/desktop/pull/5560"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "exploitabilityScore": 0.9,
          "impactScore": 5.5
        }
      },
      "lastModifiedDate": "2023-04-10T18:16Z",
      "publishedDate": "2023-04-04T13:15Z"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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