GSD-2023-6547
Vulnerability from gsd - Updated: 2023-12-13 01:20Details
Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2023-6547",
"id": "GSD-2023-6547"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2023-6547"
],
"details": "Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.\u00a0\n\n",
"id": "GSD-2023-6547",
"modified": "2023-12-13T01:20:33.023767Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2023-6547",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
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{
"product": {
"product_data": [
{
"product_name": "Mattermost",
"version": {
"version_data": [
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
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]
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]
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}
]
},
"vendor_name": "Mattermost"
}
]
}
},
"credits": [
{
"lang": "en",
"value": "Leandro Chaves (brdoors3)"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"value": "Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.\u00a0\n\n"
}
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"generator": {
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"impact": {
"cvss": [
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 3.7,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N",
"version": "3.1"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"cweId": "CWE-284",
"lang": "eng",
"value": "CWE-284: Improper Access Control"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://mattermost.com/security-updates",
"refsource": "MISC",
"url": "https://mattermost.com/security-updates"
}
]
},
"solution": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpdate Mattermost Server to versions 8.1.6, 9.2.2 or higher.\u003c/p\u003e"
}
],
"value": "Update Mattermost Server to versions 8.1.6, 9.2.2 or higher.\n\n"
}
],
"source": {
"advisory": "MMSA-2023-00271",
"defect": [
"https://mattermost.atlassian.net/browse/MM-54988"
],
"discovery": "EXTERNAL"
}
},
"nvd.nist.gov": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
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"descriptions": [
{
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"value": "Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.\u00a0\n\n"
},
{
"lang": "es",
"value": "Mattermost no valida la membres\u00eda del equipo cuando un usuario intenta acceder a un playbook, lo que permite que un usuario con permisos para un playbook pero sin permisos para el equipo en el que se encuentra el playbook acceda y modifique el playbook. Esto puede suceder si el usuario alguna vez fue miembro del equipo, obtuvo permisos para el playbook y luego fue eliminado del equipo."
}
],
"id": "CVE-2023-6547",
"lastModified": "2023-12-14T19:31:10.497",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
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"integrityImpact": "LOW",
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"source": "nvd@nist.gov",
"type": "Primary"
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{
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"source": "responsibledisclosure@mattermost.com",
"type": "Secondary"
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"published": "2023-12-12T09:15:09.857",
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{
"source": "responsibledisclosure@mattermost.com",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
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}
],
"sourceIdentifier": "responsibledisclosure@mattermost.com",
"vulnStatus": "Analyzed",
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"source": "responsibledisclosure@mattermost.com",
"type": "Secondary"
}
]
}
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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