CVE-2023-40703
Vulnerability from cvelistv5
Published
2023-11-27 09:08
Modified
2025-06-03 14:01
Severity ?
EPSS score ?
Summary
Denial of Service via specially crafted block fields in Mattermost Boards
References
▼ | URL | Tags | |
---|---|---|---|
responsibledisclosure@mattermost.com | https://mattermost.com/security-updates | Vendor Advisory |
Impacted products
▼ | Vendor | Product |
---|---|---|
Mattermost | Mattermost |
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"8.1.3", "status": "affected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "9.0.1", "status": "affected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "9.1.0", "status": "affected", "version": "0", "versionType": "semver" }, { "status": "unaffected", "version": "9.1.1" }, { "status": "unaffected", "version": "9.0.2" }, { "status": "unaffected", "version": "7.8.13" }, { "status": "unaffected", "version": "8.1.4" } ] } ], "credits": [ { "lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "vultza (vultza)" } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "\u003cp\u003eMattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing\u0026nbsp;a attacker to\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003econsume excessive resources, possibly leading to Denial of Service, by\u003c/span\u003e\u0026nbsp;patching the field of a block using a specially crafted string.\u0026nbsp;\u003c/p\u003e" } ], "value": "Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing\u00a0a attacker to\u00a0consume excessive resources, possibly leading to Denial of Service, by\u00a0patching the field of a block using a specially crafted string.\u00a0\n\n" } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2023-11-27T09:08:31.251Z", "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost" }, "references": [ { "url": "https://mattermost.com/security-updates" } ], "solutions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "\u003cp\u003eUpdate Mattermost Server to versions 9.1.1, 9.0.2, 7.8.13, 8.1.4 or higher.\u003c/p\u003e" } ], "value": "Update Mattermost Server to versions 9.1.1, 9.0.2, 7.8.13, 8.1.4 or higher.\n\n" } ], "source": { "advisory": "MMSA-2023-00219", "defect": [ "https://mattermost.atlassian.net/browse/MM-53233" ], "discovery": "EXTERNAL" }, "title": "Denial of Service via specially crafted block fields in Mattermost Boards", "x_generator": { "engine": "Vulnogram 0.1.0-dev" } } }, "cveMetadata": { "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "assignerShortName": "Mattermost", "cveId": "CVE-2023-40703", 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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- 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.