CVE-2021-37862

Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.

CVSS v3 3.7 LOW
CVSS v2.0 5.8 MEDIUM

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://hackerone.com/reports/1357013	Permissions Required
https://mattermost.com/security-updates/	Vendor Advisory
https://hackerone.com/reports/1357013	Permissions Required
https://mattermost.com/security-updates/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:15

Type	Values Removed	Values Added
References	~~() https://hackerone.com/reports/1357013 - Permissions Required~~	() https://hackerone.com/reports/1357013 - Permissions Required
References	~~() https://mattermost.com/security-updates/ - Vendor Advisory~~	() https://mattermost.com/security-updates/ - Vendor Advisory
CVSS	v2 : ~~5.8~~ v3 : ~~5.4~~	v2 : 5.8 v3 : 3.7

Information

Published : 2021-12-17 17:15

Updated : 2024-11-21 06:15

NVD link : CVE-2021-37862

Mitre link : CVE-2021-37862

CVE.ORG link : CVE-2021-37862

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-754

Improper Check for Unusual or Exceptional Conditions

{"id": "CVE-2021-37862", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Secondary", "source": "responsibledisclosure@mattermost.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.7, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 1.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "published": "2021-12-17T17:15:12.920", "references": [{"url": "https://hackerone.com/reports/1357013", "tags": ["Permissions Required"], "source": "responsibledisclosure@mattermost.com"}, {"url": "https://mattermost.com/security-updates/", "tags": ["Vendor Advisory"], "source": "responsibledisclosure@mattermost.com"}, {"url": "https://hackerone.com/reports/1357013", "tags": ["Permissions Required"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://mattermost.com/security-updates/", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "responsibledisclosure@mattermost.com", "description": [{"lang": "en", "value": "CWE-754"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-754"}]}], "descriptions": [{"lang": "en", "value": "Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token."}, {"lang": "es", "value": "Mattermost versiones 6.0 y anteriores, no comprueban suficientemente la direcci\u00f3n de correo electr\u00f3nico durante el registro, lo que permite a atacantes enga\u00f1ar a usuarios para que se registren usando direcciones de correo electr\u00f3nico controladas por el atacante por medio de un token de invitaci\u00f3n dise\u00f1ado"}], "lastModified": "2024-11-21T06:15:59.733", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A44CD6CB-BDAD-44EE-87D7-33057AF8F055", "versionEndIncluding": "6.0"}], "operator": "OR"}]}], "sourceIdentifier": "responsibledisclosure@mattermost.com"}