certfr_avis - certfr-2023-avi-0264

CERTFR-2023-AVI-0264

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans Nextcloud Server. Elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

Vendor	Product	Description
Nextcloud	N/A	Nextcloud Enterprise Server versions 24.x antérieures à 24.0.10
Nextcloud	N/A	Nextcloud Server versions 24.0.x antérieures à 24.0.10
Nextcloud	N/A	Nextcloud Enterprise Server versions 22.x antérieures à 22.2.10.10
Nextcloud	N/A	Nextcloud Enterprise Server versions 23.x antérieures à 23.0.12.5
Nextcloud	N/A	Nextcloud Enterprise Server versions 21.x antérieures à 21.0.9.10
Nextcloud	N/A	Nextcloud Server versions 25.0.x antérieures à 25.0.4
Nextcloud	N/A	Nextcloud Enterprise Server versions 25.0.x antérieures à 25.0.4

References

Title

Publication Time

Tags

Bulletin de sécurité Nextcloud GHSA-v243-x6jc-42mp du 27 mars 2023	None	vendor-advisory
Bulletin de sécurité Nextcloud GHSA-8v5c-f752-fgpv du 27 mars 2023	None	vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Nextcloud Enterprise Server versions 24.x ant\u00e9rieures \u00e0 24.0.10",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Server versions 24.0.x ant\u00e9rieures \u00e0 24.0.10",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 22.x ant\u00e9rieures \u00e0 22.2.10.10",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 23.x ant\u00e9rieures \u00e0 23.0.12.5",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 21.x ant\u00e9rieures \u00e0 21.0.9.10",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Server versions 25.0.x ant\u00e9rieures \u00e0 25.0.4",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 25.0.x ant\u00e9rieures \u00e0 25.0.4",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2023-25817",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-25817"
    },
    {
      "name": "CVE-2023-25818",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-25818"
    }
  ],
  "initial_release_date": "2023-03-27T00:00:00",
  "last_revision_date": "2023-03-27T00:00:00",
  "links": [],
  "reference": "CERTFR-2023-AVI-0264",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2023-03-27T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans \u003cspan\nclass=\"textit\"\u003eNextcloud Server\u003c/span\u003e. Elles permettent \u00e0 un attaquant\nde provoquer une \u00e9l\u00e9vation de privil\u00e8ges, une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des\ndonn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Nextcloud Server",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-v243-x6jc-42mp du 27 mars 2023",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-8v5c-f752-fgpv du 27 mars 2023",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv"
    }
  ]
}

CVE-2023-25818 (GCVE-0-2023-25818)

Vulnerability from cvelistv5

Published

2023-03-27 20:00

Modified

2025-02-19 15:23

Severity ?

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

CWE

CWE-307 - Improper Restriction of Excessive Authentication Attempts

Summary

Nextcloud server is an open source, personal cloud implementation. In affected versions a malicious user could try to reset the password of another user and then brute force the 62^21 combinations for the password reset token. As of commit `704eb3aa` password reset attempts are now throttled. Note that 62^21 combinations would significant compute resources to brute force. None the less it is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. There are no known workarounds for this vulnerability.

References

URL

Tags

	https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp	x_refsource_CONFIRM
	https://github.com/nextcloud/server/pull/36489	x_refsource_MISC
	https://github.com/nextcloud/server/pull/36489/commits/704eb3aa6cecc0a646f5cca4290b595f493f9ed3	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	nextcloud	security-advisories	Version: >= 24.0.0, < 24.0.10 Version: >= 25.0.0, < 25.0.4

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:32:12.551Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp"
          },
          {
            "name": "https://github.com/nextcloud/server/pull/36489",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/36489"
          },
          {
            "name": "https://github.com/nextcloud/server/pull/36489/commits/704eb3aa6cecc0a646f5cca4290b595f493f9ed3",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/36489/commits/704eb3aa6cecc0a646f5cca4290b595f493f9ed3"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-25818",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-19T15:22:55.116439Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-19T15:23:50.147Z",
          "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= 24.0.0, \u003c 24.0.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 25.0.0, \u003c 25.0.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Nextcloud server is an open source, personal cloud implementation. In affected versions a malicious user could try to reset the password of another user and then brute force the 62^21 combinations for the password reset token. As of commit `704eb3aa` password reset attempts are now throttled. Note that 62^21 combinations would significant compute resources to brute force. None the less it is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. There are no known workarounds for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-307",
              "description": "CWE-307: Improper Restriction of Excessive Authentication Attempts",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-27T20:00:01.019Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp"
        },
        {
          "name": "https://github.com/nextcloud/server/pull/36489",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/server/pull/36489"
        },
        {
          "name": "https://github.com/nextcloud/server/pull/36489/commits/704eb3aa6cecc0a646f5cca4290b595f493f9ed3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/server/pull/36489/commits/704eb3aa6cecc0a646f5cca4290b595f493f9ed3"
        }
      ],
      "source": {
        "advisory": "GHSA-v243-x6jc-42mp",
        "discovery": "UNKNOWN"
      },
      "title": "Missing brute force protection on password reset token in Nextcloud Server"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-25818",
    "datePublished": "2023-03-27T20:00:01.019Z",
    "dateReserved": "2023-02-15T16:34:48.773Z",
    "dateUpdated": "2025-02-19T15:23:50.147Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2023-25817 (GCVE-0-2023-25817)

Vulnerability from cvelistv5

Published

2023-03-27 20:04

Modified

2025-02-19 15:21

Severity ?

3.5 (Low) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CWE

CWE-281 - Improper Preservation of Permissions

Summary

Nextcloud server is an open source, personal cloud implementation. In versions from 24.0.0 and before 24.0.9 a user could escalate their permissions to delete files they were not supposed to deletable but only viewed or downloaded. This issue has been addressed andit is recommended that the Nextcloud Server is upgraded to 24.0.9. There are no known workarounds for this vulnerability.

References

URL

Tags

	https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv	x_refsource_CONFIRM
	https://github.com/nextcloud/server/pull/33941	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	nextcloud	security-advisories	Version: >= 24.0.0, < 24.0.9

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:32:12.508Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv"
          },
          {
            "name": "https://github.com/nextcloud/server/pull/33941",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/nextcloud/server/pull/33941"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-25817",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-19T15:21:24.462770Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-19T15:21:41.300Z",
          "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= 24.0.0, \u003c 24.0.9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Nextcloud server is an open source, personal cloud implementation. In versions from 24.0.0 and before 24.0.9 a user could escalate their permissions to delete files they were not supposed to deletable but only viewed or downloaded. This issue has been addressed andit is recommended that the Nextcloud Server is upgraded to 24.0.9. There are no known workarounds for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-281",
              "description": "CWE-281: Improper Preservation of Permissions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-27T20:04:15.316Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv"
        },
        {
          "name": "https://github.com/nextcloud/server/pull/33941",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/server/pull/33941"
        }
      ],
      "source": {
        "advisory": "GHSA-8v5c-f752-fgpv",
        "discovery": "UNKNOWN"
      },
      "title": "Delete permissions are not saved when creating public share in Nextcloud server"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-25817",
    "datePublished": "2023-03-27T20:04:15.316Z",
    "dateReserved": "2023-02-15T16:34:48.773Z",
    "dateUpdated": "2025-02-19T15:21:41.300Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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.

Action not permitted

CERTFR-2023-AVI-0264

Vulnerability from certfr_avis

Solution

CVE-2023-25818 (GCVE-0-2023-25818)

Vulnerability from cvelistv5

CVE-2023-25817 (GCVE-0-2023-25817)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature