CVE-2021-23127 - Vulnerability Details - OpenCVE

Description

An issue was discovered in Joomla! 3.2.0 through 3.9.24. Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes.

Published: 2021-03-04

Score: 9.1 Critical

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

Joomla! Project

Joomla! CMS

affected

Version	Status	Constraints
`3.2.0-3.9.24`	affected	—

Configuration 1 [-]

cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*

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

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00009.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html

History

No history.

Subscriptions

Joomla Joomla\!

MITRE

Status: PUBLISHED

Assigner: Joomla

Published: 2021-03-04T17:37:14.392Z

Updated: 2026-02-25T05:05:14.324Z

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

Link: CVE-2021-23127

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-03-04T18:15:13.287

Modified: 2024-11-21T05:51:15.417

Link: CVE-2021-23127

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-noinfo

{"containers": {"cna": {"affected": [{"product": "Joomla! CMS", "vendor": "Joomla! Project", "versions": [{"status": "affected", "version": "3.2.0-3.9.24"}]}], "datePublic": "2021-03-02T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "An issue was discovered in Joomla! 3.2.0 through 3.9.24. Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes."}], "problemTypes": [{"descriptions": [{"description": "Insecure Randomness", "lang": "en", "type": "text"}]}], "providerMetadata": {"orgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "shortName": "Joomla", "dateUpdated": "2026-02-25T05:05:14.324Z"}, "references": [{"tags": ["x_refsource_MISC", "vendor-advisory"], "url": "https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html"}], "title": "[20210301] - Core - Insecure randomness within 2FA secret generation", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@joomla.org", "DATE_PUBLIC": "2021-03-02T16:00:00", "ID": "CVE-2021-23127", "STATE": "PUBLIC", "TITLE": "[20210301] - Core - Insecure randomness within 2FA secret generation"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Joomla! CMS", "version": {"version_data": [{"version_value": "3.2.0-3.9.24"}]}}]}, "vendor_name": "Joomla! Project"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "An issue was discovered in Joomla! 3.2.0 through 3.9.24. Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Insecure Randomness"}]}]}, "references": {"reference_data": [{"name": "https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html", "refsource": "MISC", "url": "https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html"}]}}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:58:26.365Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "vendor-advisory", "x_transferred"], "url": "https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html"}]}]}, "cveMetadata": {"assignerOrgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586", "assignerShortName": "Joomla", "cveId": "CVE-2021-23127", "datePublished": "2021-03-04T17:37:14.392Z", "dateReserved": "2021-01-06T00:00:00.000Z", "dateUpdated": "2026-02-25T05:05:14.324Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*", "matchCriteriaId": "A02A2FBC-42A3-42A1-B06A-CC676094F7C3", "versionEndExcluding": "3.9.25", "versionStartIncluding": "3.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Joomla! 3.2.0 through 3.9.24. Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Joomla! versiones 3.2.0 hasta 3.9.24. El uso de una longitud insuficiente para el secreto 2FA seg\u00fan RFC 4226 de 10 bytes frente a 20 bytes"}], "id": "CVE-2021-23127", "lastModified": "2024-11-21T05:51:15.417", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 6.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-04T18:15:13.287", "references": [{"source": "security@joomla.org", "tags": ["Vendor Advisory"], "url": "https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html"}], "sourceIdentifier": "security@joomla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}