certfr_avis - certfr-2025-avi-0643

CERTFR-2025-AVI-0643

Vulnerability from certfr_avis

Une vulnérabilité a été découverte dans Mattermost Server. Elle permet à un attaquant de provoquer un déni de service à distance.

Solutions

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

Impacted products

Vendor	Product	Description
Mattermost	Mattermost Server	Mattermost Server versions 10.10.x antérieures à 10.10.1
Mattermost	Mattermost Server	Mattermost Server versions 10.8.x antérieures à 10.8.4
Mattermost	Mattermost Server	Mattermost Server versions 10.5.x antérieures à 10.5.9
Mattermost	Mattermost Server	Mattermost Server versions 9.11.x antérieures à 9.11.18
Mattermost	Mattermost Server	Mattermost Server versions 10.9.x antérieures à 10.9.4

References

Title

Publication Time

Tags

Bulletin de sécurité Mattermost MMSA-2025-00506

2025-07-31

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Mattermost Server versions 10.10.x ant\u00e9rieures \u00e0 10.10.1",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 10.8.x ant\u00e9rieures \u00e0 10.8.4",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 10.5.x ant\u00e9rieures \u00e0 10.5.9",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 9.11.x ant\u00e9rieures \u00e0 9.11.18",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    },
    {
      "description": "Mattermost Server versions 10.9.x ant\u00e9rieures \u00e0 10.9.4",
      "product": {
        "name": "Mattermost Server",
        "vendor": {
          "name": "Mattermost",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2025-8402",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-8402"
    }
  ],
  "initial_release_date": "2025-07-31T00:00:00",
  "last_revision_date": "2025-08-25T00:00:00",
  "links": [],
  "reference": "CERTFR-2025-AVI-0643",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2025-07-31T00:00:00.000000"
    },
    {
      "description": "Ajout de l\u0027identifiant CVE-2025-8402 et modification du risque. ",
      "revision_date": "2025-08-25T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Mattermost Server. Elle permet \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance.",
  "title": "Vuln\u00e9rabilit\u00e9 dans Mattermost Server",
  "vendor_advisories": [
    {
      "published_at": "2025-07-31",
      "title": "Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2025-00506",
      "url": "https://mattermost.com/security-updates/"
    }
  ]
}

CVE-2025-8402 (GCVE-0-2025-8402)

Vulnerability from cvelistv5

Published

2025-08-21 17:01

Modified

2025-08-21 17:30

Severity ?

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

CWE

CWE-1287 - Improper Validation of Specified Type of Input
CWE-476 - NULL Pointer Dereference

Summary

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.

References

URL

Tags

https://mattermost.com/security-updates

Impacted products

	Vendor	Product	Version
	Mattermost	Mattermost	Version: 10.8.0 ≤ 10.8.3 Version: 10.5.0 ≤ 10.5.8 Version: 9.11.0 ≤ 9.11.17 Version: 10.10.0 ≤ Version: 10.9.0 ≤ 10.9.3

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-8402",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-21T17:20:44.403747Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-21T17:30:38.422Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Mattermost",
          "vendor": "Mattermost",
          "versions": [
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              "lessThanOrEqual": "10.8.3",
              "status": "affected",
              "version": "10.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "10.5.8",
              "status": "affected",
              "version": "10.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.11.17",
              "status": "affected",
              "version": "9.11.0",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "10.10.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "10.9.3",
              "status": "affected",
              "version": "10.9.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "10.11.0"
            },
            {
              "status": "unaffected",
              "version": "10.8.4"
            },
            {
              "status": "unaffected",
              "version": "10.5.9"
            },
            {
              "status": "unaffected",
              "version": "9.11.18"
            },
            {
              "status": "unaffected",
              "version": "10.10.1"
            },
            {
              "status": "unaffected",
              "version": "10.9.4"
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      ],
      "credits": [
        {
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          "type": "finder",
          "value": "daw10"
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      "descriptions": [
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          "supportingMedia": [
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              "value": "\u003cp\u003eMattermost versions 10.8.x \u0026lt;= 10.8.3, 10.5.x \u0026lt;= 10.5.8, 9.11.x \u0026lt;= 9.11.17, 10.10.x \u0026lt;= 10.10.0, 10.9.x \u0026lt;= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.\u003c/p\u003e"
            }
          ],
          "value": "Mattermost versions 10.8.x \u003c= 10.8.3, 10.5.x \u003c= 10.5.8, 9.11.x \u003c= 9.11.17, 10.10.x \u003c= 10.10.0, 10.9.x \u003c= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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          "scenarios": [
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              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "CWE-476: NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
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        "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
        "shortName": "Mattermost"
      },
      "references": [
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          "url": "https://mattermost.com/security-updates"
        }
      ],
      "solutions": [
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          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eUpdate Mattermost to versions 10.11.0, 10.8.4, 10.5.9, 9.11.18, 10.10.1, 10.9.4 or higher.\u003c/p\u003e"
            }
          ],
          "value": "Update Mattermost to versions 10.11.0, 10.8.4, 10.5.9, 9.11.18, 10.10.1, 10.9.4 or higher."
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      "source": {
        "advisory": "MMSA-2025-00506",
        "defect": [
          "https://mattermost.atlassian.net/browse/MM-64717"
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        "discovery": "EXTERNAL"
      },
      "title": "Nil pointer dereference in bulk import crashes server",
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  },
  "cveMetadata": {
    "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
    "assignerShortName": "Mattermost",
    "cveId": "CVE-2025-8402",
    "datePublished": "2025-08-21T17:01:43.420Z",
    "dateReserved": "2025-07-31T00:31:47.312Z",
    "dateUpdated": "2025-08-21T17:30:38.422Z",
    "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.
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-2025-AVI-0643

Vulnerability from certfr_avis

Solutions

CVE-2025-8402 (GCVE-0-2025-8402)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature