CVE-2023-39959 (GCVE-0-2023-39959)

Vulnerability from cvelistv5 – Published: 2023-08-10 17:07 – Updated: 2024-10-08 14:11
VLAI?
Title
Existence of calendars and address books can be checked by unauthenticated users
Summary
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
Severity ?
3.5 (Low)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
nextcloud security-advisories Affected: >= 25.0.0, < 25.0.9
Affected: >= 26.0.0, < 26.0.4
Affected: >= 27.0.0, < 27.0.1
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T18:18:10.193Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj"
          },
          {
            "name": "https://github.com/nextcloud/server/pull/38747",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/38747"
          },
          {
            "name": "https://hackerone.com/reports/1832126",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1832126"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-39959",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-08T14:07:20.676683Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-08T14:11:04.848Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "security-advisories",
          "vendor": "nextcloud",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 25.0.0, \u003c 25.0.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 26.0.0, \u003c 26.0.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 27.0.0, \u003c 27.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-08-10T17:11:48.800Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj"
        },
        {
          "name": "https://github.com/nextcloud/server/pull/38747",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/server/pull/38747"
        },
        {
          "name": "https://hackerone.com/reports/1832126",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1832126"
        }
      ],
      "source": {
        "advisory": "GHSA-g97r-8ffm-hfpj",
        "discovery": "UNKNOWN"
      },
      "title": "Existence of calendars and address books can be checked by unauthenticated users"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-39959",
    "datePublished": "2023-08-10T17:07:42.367Z",
    "dateReserved": "2023-08-07T16:27:27.076Z",
    "dateUpdated": "2024-10-08T14:11:04.848Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*\", \"versionStartIncluding\": \"25.0.0\", \"versionEndExcluding\": \"25.0.9\", \"matchCriteriaId\": \"623D58E0-57A0-42B3-8ED6-DF3B988633AB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\", \"versionStartIncluding\": \"25.0.0\", \"versionEndExcluding\": \"25.0.9\", \"matchCriteriaId\": \"D60D3184-C289-49E8-9FBE-EDA8B927131A\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*\", \"versionStartIncluding\": \"26.0.0\", \"versionEndExcluding\": \"26.0.4\", \"matchCriteriaId\": \"CA187E45-EB4B-468A-9291-FD66B360B2D6\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\", \"versionStartIncluding\": \"26.0.0\", \"versionEndExcluding\": \"26.0.4\", \"matchCriteriaId\": \"2D0FA653-A595-4EC8-9F77-0AD1A4699B07\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:-:*:*:*\", \"matchCriteriaId\": \"13650329-BCD1-4FDB-9446-5133C0EDC905\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:enterprise:*:*:*\", \"matchCriteriaId\": \"DB1974B0-31C5-4E22-9E8C-BD40C6B54D0C\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.\"}]",
      "id": "CVE-2023-39959",
      "lastModified": "2024-11-21T08:16:07.247",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N\", \"baseScore\": 3.5, \"baseSeverity\": \"LOW\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.1, \"impactScore\": 1.4}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}]}",
      "published": "2023-08-10T18:15:10.157",
      "references": "[{\"url\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://github.com/nextcloud/server/pull/38747\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Patch\"]}, {\"url\": \"https://hackerone.com/reports/1832126\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Permissions Required\"]}, {\"url\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://github.com/nextcloud/server/pull/38747\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://hackerone.com/reports/1832126\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Permissions Required\"]}]",
      "sourceIdentifier": "security-advisories@github.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-284\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-39959\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2023-08-10T18:15:10.157\",\"lastModified\":\"2024-11-21T08:16:07.247\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N\",\"baseScore\":3.5,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.1,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"25.0.0\",\"versionEndExcluding\":\"25.0.9\",\"matchCriteriaId\":\"623D58E0-57A0-42B3-8ED6-DF3B988633AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"25.0.0\",\"versionEndExcluding\":\"25.0.9\",\"matchCriteriaId\":\"D60D3184-C289-49E8-9FBE-EDA8B927131A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"26.0.0\",\"versionEndExcluding\":\"26.0.4\",\"matchCriteriaId\":\"CA187E45-EB4B-468A-9291-FD66B360B2D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"26.0.0\",\"versionEndExcluding\":\"26.0.4\",\"matchCriteriaId\":\"2D0FA653-A595-4EC8-9F77-0AD1A4699B07\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:-:*:*:*\",\"matchCriteriaId\":\"13650329-BCD1-4FDB-9446-5133C0EDC905\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:enterprise:*:*:*\",\"matchCriteriaId\":\"DB1974B0-31C5-4E22-9E8C-BD40C6B54D0C\"}]}]}],\"references\":[{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/pull/38747\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://hackerone.com/reports/1832126\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Permissions Required\"]},{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/pull/38747\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://hackerone.com/reports/1832126\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Permissions Required\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\", \"name\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"https://github.com/nextcloud/server/pull/38747\", \"name\": \"https://github.com/nextcloud/server/pull/38747\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://hackerone.com/reports/1832126\", \"name\": \"https://hackerone.com/reports/1832126\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T18:18:10.193Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-39959\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-08T14:07:20.676683Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-08T14:10:59.290Z\"}}], \"cna\": {\"title\": \"Existence of calendars and address books can be checked by unauthenticated users\", \"source\": {\"advisory\": \"GHSA-g97r-8ffm-hfpj\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 3.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"nextcloud\", \"product\": \"security-advisories\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 25.0.0, \u003c 25.0.9\"}, {\"status\": \"affected\", \"version\": \"\u003e= 26.0.0, \u003c 26.0.4\"}, {\"status\": \"affected\", \"version\": \"\u003e= 27.0.0, \u003c 27.0.1\"}]}], \"references\": [{\"url\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\", \"name\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/nextcloud/server/pull/38747\", \"name\": \"https://github.com/nextcloud/server/pull/38747\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://hackerone.com/reports/1832126\", \"name\": \"https://hackerone.com/reports/1832126\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-284\", \"description\": \"CWE-284: Improper Access Control\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2023-08-10T17:11:48.800Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-39959\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-08T14:11:04.848Z\", \"dateReserved\": \"2023-08-07T16:27:27.076Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2023-08-10T17:07:42.367Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.