Vulnerability-Lookup

GHSA-59HF-MPF8-PQJH

Vulnerability from github – Published: 2024-09-26 09:31 – Updated: 2024-09-27 22:01

Summary

Mattermost fails to strip `embeds` from `metadata` when broadcasting `posted` events

Details

Mattermost does not strip embeds from metadata when broadcasting posted events.

This allows users to include arbitrary embeds in posts, which are then broadcasted via websockets. This can be exploited in many ways, for example to create permalinks with fully customizable content or to trigger a client Side Denial of Service (DoS) by sending a permalink with a non-string message.

The advisory metadata references the appropriate go pseudo version available from pkg.go.dev

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20240806094731-69a8b3df0f9f"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-47003"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-09-27T22:01:15Z",
    "nvd_published_at": "2024-09-26T08:15:06Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost does not strip `embeds` from `metadata` when broadcasting `posted` events.\n\nThis allows users to include arbitrary embeds in posts, which are then broadcasted via websockets. This can be exploited in many ways, for example to create permalinks with fully customizable content or to trigger a client Side Denial of Service (DoS) by sending a permalink with a non-string message.\n\nThe advisory metadata references the appropriate go pseudo version available from pkg.go.dev",
  "id": "GHSA-59hf-mpf8-pqjh",
  "modified": "2024-09-27T22:01:15Z",
  "published": "2024-09-26T09:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47003"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/pull/27763"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/69a8b3df0f9fd3a7a5b792ec678b6191618d039b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/c0rydoras/cves/tree/main/CVE-2024-47003"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Mattermost fails to strip `embeds` from `metadata` when broadcasting `posted` events"
}

CVE-2024-47003 (GCVE-0-2024-47003)

Vulnerability from cvelistv5 – Published: 2024-09-26 08:05 – Updated: 2024-09-26 13:11

Title

DoS via non-string message using permalink embed

Summary

Mattermost versions 9.11.x <= 9.11.0 and 9.5.x <= 9.5.8 fail to validate that the message of the permalink post is a string, which allows an attacker to send a non-string value as the message of a permalink post and crash the frontend.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-26 13:10 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

Mattermost mitre root

References

1 reference

URL	Tags
https://mattermost.com/security-updates

Impacted products

1 product

Vendor	Product	Version
Mattermost	Mattermost	Affected: 9.11.0 Affected: 9.5.0 , ≤ 9.5.8 (semver) Unaffected: 10.0.0 Unaffected: 9.11.1 Unaffected: 9.5.9

Credits

c0rydoras (c0rydoras)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-47003",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-26T13:10:27.555291Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-26T13:11:00.827Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
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          "vendor": "Mattermost",
          "versions": [
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              "status": "affected",
              "version": "9.11.0"
            },
            {
              "lessThanOrEqual": "9.5.8",
              "status": "affected",
              "version": "9.5.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "10.0.0"
            },
            {
              "status": "unaffected",
              "version": "9.11.1"
            },
            {
              "status": "unaffected",
              "version": "9.5.9"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "c0rydoras (c0rydoras)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
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            }
          ],
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2024-09-26T08:05:16.392Z",
        "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
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      "references": [
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          "url": "https://mattermost.com/security-updates"
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      ],
      "solutions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eUpdate Mattermost to versions 10.0.0, 9.11.1, 9.5.9 or higher.\u003c/p\u003e"
            }
          ],
          "value": "Update Mattermost to versions 10.0.0, 9.11.1, 9.5.9 or higher."
        }
      ],
      "source": {
        "advisory": "MMSA-2024-00373",
        "defect": [
          "https://mattermost.atlassian.net/browse/MM-59077"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "DoS via non-string message using permalink embed",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
    "assignerShortName": "Mattermost",
    "cveId": "CVE-2024-47003",
    "datePublished": "2024-09-26T08:05:16.392Z",
    "dateReserved": "2024-09-23T07:55:36.376Z",
    "dateUpdated": "2024-09-26T13:11:00.827Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.