CVE-2021-22896 - Vulnerability Details - OpenCVE

Description

Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.

Published: 2021-06-11

Score: 4.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

Nextcloud Mail

affected

Version	Status	Constraints
`Fixed in 1.9.5`	affected	—

Configuration 1 [-]

cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-10028	Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00409.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/nextcloud/mail/pull/4864
https://github.com/nextcloud/mail/releases/tag/v1.9.5
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3
https://hackerone.com/reports/1129996

History

No history.

Subscriptions

Nextcloud Nextcloud

MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2021-06-11T15:49:38.000Z

Updated: 2024-08-03T18:58:25.923Z

Reserved: 2021-01-06T00:00:00.000Z

Link: CVE-2021-22896

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-06-11T16:15:10.887

Modified: 2024-11-21T05:50:51.803

Link: CVE-2021-22896

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-862

{"containers": {"cna": {"affected": [{"product": "Nextcloud Mail", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in 1.9.5"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "description": "Missing Authorization (CWE-862)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-06-11T15:49:38.000Z", "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/1129996"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/mail/pull/4864"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/mail/releases/tag/v1.9.5"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "support@hackerone.com", "ID": "CVE-2021-22896", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Nextcloud Mail", "version": {"version_data": [{"version_value": "Fixed in 1.9.5"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Missing Authorization (CWE-862)"}]}]}, "references": {"reference_data": [{"name": "https://hackerone.com/reports/1129996", "refsource": "MISC", "url": "https://hackerone.com/reports/1129996"}, {"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3", "refsource": "MISC", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3"}, {"name": "https://github.com/nextcloud/mail/pull/4864", "refsource": "MISC", "url": "https://github.com/nextcloud/mail/pull/4864"}, {"name": "https://github.com/nextcloud/mail/releases/tag/v1.9.5", "refsource": "MISC", "url": "https://github.com/nextcloud/mail/releases/tag/v1.9.5"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:58:25.923Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/1129996"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/mail/pull/4864"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nextcloud/mail/releases/tag/v1.9.5"}]}]}, "cveMetadata": {"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "assignerShortName": "hackerone", "cveId": "CVE-2021-22896", "datePublished": "2021-06-11T15:49:38.000Z", "dateReserved": "2021-01-06T00:00:00.000Z", "dateUpdated": "2024-08-03T18:58:25.923Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*", "matchCriteriaId": "21563E4F-BABA-400D-879F-5DCE08110B1C", "versionEndExcluding": "1.9.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users."}, {"lang": "es", "value": "Nextcloud Mail versiones anteriores a 1.9.5, sufre de un control de acceso inapropiado debido a una falta de comprobaci\u00f3n de permisos que permite a otros usuarios autenticados crear alias de correo para otros usuarios"}], "id": "CVE-2021-22896", "lastModified": "2024-11-21T05:50:51.803", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-11T16:15:10.887", "references": [{"source": "support@hackerone.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/mail/pull/4864"}, {"source": "support@hackerone.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/nextcloud/mail/releases/tag/v1.9.5"}, {"source": "support@hackerone.com", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3"}, {"source": "support@hackerone.com", "tags": ["Third Party Advisory"], "url": "https://hackerone.com/reports/1129996"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nextcloud/mail/pull/4864"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/nextcloud/mail/releases/tag/v1.9.5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://hackerone.com/reports/1129996"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "support@hackerone.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-862"}], "source": "nvd@nist.gov", "type": "Primary"}]}