CVE-2021-20803 - Vulnerability Details - OpenCVE

Description

Operation restriction bypass in the management screen of Cybozu Remote Service 3.1.8 to 3.1.9 allows a remote authenticated attacker to alter the data of the management screen.

Published: 2021-10-13

Score: 5.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

Vendor Product Default status Versions

Cybozu, Inc.

Cybozu Remote Service

affected

Version	Status	Constraints
`3.1.8 to 3.1.9`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:cybozu:remote_service_manager:3.1.8:::::::*
	cpe:2.3:a:cybozu:remote_service_manager:3.1.9:::::::*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-8215	Operation restriction bypass in the management screen of Cybozu Remote Service 3.1.8 to 3.1.9 allows a remote authenticated attacker to alter the data of the management screen.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

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 0.00152.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://jvn.jp/en/jp/JVN52694228/index.html
https://kb.cybozu.support/article/37421

History

No history.

Subscriptions

Cybozu Remote Service Manager

MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2021-10-13T08:31:00.000Z

Updated: 2024-08-03T17:53:22.318Z

Reserved: 2020-12-17T00:00:00.000Z

Link: CVE-2021-20803

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-10-13T09:15:08.050

Modified: 2024-11-21T05:47:12.893

Link: CVE-2021-20803

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-863

{"containers": {"cna": {"affected": [{"product": "Cybozu Remote Service", "vendor": "Cybozu, Inc.", "versions": [{"status": "affected", "version": "3.1.8 to 3.1.9"}]}], "descriptions": [{"lang": "en", "value": "Operation restriction bypass in the management screen of Cybozu Remote Service 3.1.8 to 3.1.9 allows a remote authenticated attacker to alter the data of the management screen."}], "problemTypes": [{"descriptions": [{"description": "Access controls issue", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-10-13T08:31:00.000Z", "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce", "shortName": "jpcert"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://jvn.jp/en/jp/JVN52694228/index.html"}, {"tags": ["x_refsource_MISC"], "url": "https://kb.cybozu.support/article/37421"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "vultures@jpcert.or.jp", "ID": "CVE-2021-20803", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Cybozu Remote Service", "version": {"version_data": [{"version_value": "3.1.8 to 3.1.9"}]}}]}, "vendor_name": "Cybozu, Inc."}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Operation restriction bypass in the management screen of Cybozu Remote Service 3.1.8 to 3.1.9 allows a remote authenticated attacker to alter the data of the management screen."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Access controls issue"}]}]}, "references": {"reference_data": [{"name": "https://jvn.jp/en/jp/JVN52694228/index.html", "refsource": "MISC", "url": "https://jvn.jp/en/jp/JVN52694228/index.html"}, {"name": "https://kb.cybozu.support/article/37421", "refsource": "MISC", "url": "https://kb.cybozu.support/article/37421"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:53:22.318Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://jvn.jp/en/jp/JVN52694228/index.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://kb.cybozu.support/article/37421"}]}]}, "cveMetadata": {"assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce", "assignerShortName": "jpcert", "cveId": "CVE-2021-20803", "datePublished": "2021-10-13T08:31:00.000Z", "dateReserved": "2020-12-17T00:00:00.000Z", "dateUpdated": "2024-08-03T17:53:22.318Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cybozu:remote_service_manager:3.1.8:*:*:*:*:*:*:*", "matchCriteriaId": "B9219597-06C9-4D4C-A5CB-C5B8CDB0C2C8", "vulnerable": true}, {"criteria": "cpe:2.3:a:cybozu:remote_service_manager:3.1.9:*:*:*:*:*:*:*", "matchCriteriaId": "2DEC9D57-563E-4C78-83C3-967ACED941CD", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Operation restriction bypass in the management screen of Cybozu Remote Service 3.1.8 to 3.1.9 allows a remote authenticated attacker to alter the data of the management screen."}, {"lang": "es", "value": "Una omisi\u00f3n de la restricci\u00f3n de operaciones en la pantalla de administraci\u00f3n de Cybozu Remote Service versiones 3.1.8 hasta 3.1.9, permite a un atacante remoto autenticado alterar los datos de la pantalla de administraci\u00f3n"}], "id": "CVE-2021-20803", "lastModified": "2024-11-21T05:47:12.893", "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": "LOW", "baseScore": 5.4, "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:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-10-13T09:15:08.050", "references": [{"source": "vultures@jpcert.or.jp", "tags": ["Third Party Advisory"], "url": "https://jvn.jp/en/jp/JVN52694228/index.html"}, {"source": "vultures@jpcert.or.jp", "tags": ["Vendor Advisory"], "url": "https://kb.cybozu.support/article/37421"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://jvn.jp/en/jp/JVN52694228/index.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.cybozu.support/article/37421"}], "sourceIdentifier": "vultures@jpcert.or.jp", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "nvd@nist.gov", "type": "Primary"}]}