{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-39777",
        "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
        "state": "PUBLISHED",
        "assignerShortName": "Mattermost",
        "dateReserved": "2024-07-23T17:55:45.316Z",
        "datePublished": "2024-08-01T14:05:03.701Z",
        "dateUpdated": "2024-08-01T16:07:03.592Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "Mattermost",
                    "vendor": "Mattermost",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "9.9.0"
                        },
                        {
                            "lessThanOrEqual": "9.5.6",
                            "status": "affected",
                            "version": "9.5.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "9.7.5",
                            "status": "affected",
                            "version": "9.7.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "9.8.1",
                            "status": "affected",
                            "version": "9.8.0",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "9.10.0"
                        },
                        {
                            "status": "unaffected",
                            "version": "9.9.1"
                        },
                        {
                            "status": "unaffected",
                            "version": "9.5.7"
                        },
                        {
                            "status": "unaffected",
                            "version": "9.7.6"
                        },
                        {
                            "status": "unaffected",
                            "version": "9.8.2"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Juho Forsén"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>Mattermost versions 9.9.x &lt;= 9.9.0, 9.5.x &lt;= 9.5.6, 9.7.x &lt;= 9.7.5 and 9.8.x &lt;= 9.8.1 fail to disallow&nbsp;unsolicited invites to expose access to local channels, when shared channels are enabled,&nbsp;which allows a malicious&nbsp;remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.</p>"
                        }
                    ],
                    "value": "Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "HIGH",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-284",
                            "description": "CWE-284: Improper Access Control",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
                "shortName": "Mattermost",
                "dateUpdated": "2024-08-01T14:05:03.701Z"
            },
            "references": [
                {
                    "url": "https://mattermost.com/security-updates"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>Update Mattermost to versions 9.10.0, 9.9.1, 9.5.7, 9.7.6, 9.8.2 or higher.</p>"
                        }
                    ],
                    "value": "Update Mattermost to versions 9.10.0, 9.9.1, 9.5.7, 9.7.6, 9.8.2 or higher."
                }
            ],
            "source": {
                "advisory": "MMSA-2024-00331",
                "defect": [
                    "https://mattermost.atlassian.net/browse/MM-57870"
                ],
                "discovery": "INTERNAL"
            },
            "title": "Malicious remote can invite itself to an arbitrary local channel",
            "x_generator": {
                "engine": "Vulnogram 0.2.0"
            }
        },
        "adp": [
            {
                "affected": [
                    {
                        "vendor": "mattermost",
                        "product": "mattermost",
                        "cpes": [
                            "cpe:2.3:a:mattermost:mattermost:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "9.9.0",
                                "status": "affected"
                            },
                            {
                                "version": "9.5.0",
                                "status": "affected",
                                "lessThanOrEqual": "9.5.6",
                                "versionType": "semver"
                            },
                            {
                                "version": "9.7.0",
                                "status": "affected",
                                "lessThanOrEqual": "9.7.5",
                                "versionType": "semver"
                            },
                            {
                                "version": "9.8.0",
                                "status": "affected",
                                "lessThanOrEqual": "9.8.1",
                                "versionType": "semver"
                            },
                            {
                                "version": "9.10.0",
                                "status": "unaffected"
                            },
                            {
                                "version": "9.9.1",
                                "status": "unaffected"
                            },
                            {
                                "version": "9.5.7",
                                "status": "unaffected"
                            },
                            {
                                "version": "9.7.6",
                                "status": "unaffected"
                            },
                            {
                                "version": "9.8.2",
                                "status": "unaffected"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-08-01T14:33:32.102355Z",
                                "id": "CVE-2024-39777",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-08-01T16:07:03.592Z"
                }
            }
        ]
    }
}