CVE-2021-21123 - Vulnerability Details - OpenCVE

Description

Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.

Published: 2021-02-09

Score: 6.5 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

Google

Chrome

affected

Version	Status	Constraints
`unspecified`	affected	< 88.0.4324.96

Configuration 1 [-]

OR	cpe:2.3:a:google:chrome::::::::
	cpe:2.3:a:microsoft:edge_chromium::::::::

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
Debian DSA	DSA-4846-1	chromium security update
EUVD	EUVD-2021-8514	Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00869.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html
https://crbug.com/1137247
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123

History

No history.

Subscriptions

Google Chrome

Microsoft Edge Chromium

MITRE

Status: PUBLISHED

Assigner: Chrome

Published: 2021-02-09T13:55:59.000Z

Updated: 2024-08-03T18:01:13.980Z

Reserved: 2020-12-21T00:00:00.000Z

Link: CVE-2021-21123

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-02-09T14:15:15.843

Modified: 2024-11-21T05:47:36.780

Link: CVE-2021-21123

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

{"containers": {"cna": {"affected": [{"product": "Chrome", "vendor": "Google", "versions": [{"lessThan": "88.0.4324.96", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page."}], "problemTypes": [{"descriptions": [{"description": "Insufficient data validation", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-02-24T19:51:06.000Z", "orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html"}, {"tags": ["x_refsource_MISC"], "url": "https://crbug.com/1137247"}, {"tags": ["x_refsource_MISC"], "url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "chrome-cve-admin@google.com", "ID": "CVE-2021-21123", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Chrome", "version": {"version_data": [{"version_affected": "<", "version_value": "88.0.4324.96"}]}}]}, "vendor_name": "Google"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Insufficient data validation"}]}]}, "references": {"reference_data": [{"name": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html", "refsource": "MISC", "url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html"}, {"name": "https://crbug.com/1137247", "refsource": "MISC", "url": "https://crbug.com/1137247"}, {"name": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123", "refsource": "MISC", "url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:01:13.980Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://crbug.com/1137247"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123"}]}]}, "cveMetadata": {"assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "assignerShortName": "Chrome", "cveId": "CVE-2021-21123", "datePublished": "2021-02-09T13:55:59.000Z", "dateReserved": "2020-12-21T00:00:00.000Z", "dateUpdated": "2024-08-03T18:01:13.980Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "matchCriteriaId": "565ED6B8-8F41-4E79-A280-33CB321E607F", "versionEndExcluding": "88.0.4324.96", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*", "matchCriteriaId": "F4045760-DF4A-4728-9B52-0280FC45C05D", "versionEndExcluding": "88.0.705.50", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page."}, {"lang": "es", "value": "Una comprobaci\u00f3n insuficiente de datos en File System API en Google Chrome versiones anteriores a 88.0.4324.96, permiti\u00f3 a un atacante remoto omitir las restricciones del sistema de archivos por medio de una p\u00e1gina HTML dise\u00f1ada"}], "id": "CVE-2021-21123", "lastModified": "2024-11-21T05:47:36.780", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-09T14:15:15.843", "references": [{"source": "chrome-cve-admin@google.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html"}, {"source": "chrome-cve-admin@google.com", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://crbug.com/1137247"}, {"source": "chrome-cve-admin@google.com", "tags": ["Third Party Advisory"], "url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://crbug.com/1137247"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21123"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}