CVE-2021-24020 - Vulnerability Details - OpenCVE

ReportizFlow

A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Fortinet	Fortimail

Configuration 1 [-]

OR	cpe:2.3:a:fortinet:fortimail::::::::
	cpe:2.3:a:fortinet:fortimail::::::::

No data.

References

Link	Providers
https://fortiguard.com/advisory/FG-IR-21-027

History

No history.

MITRE

Status: PUBLISHED

Assigner: fortinet

Published: 2021-07-09T18:17:26

Updated: 2024-10-25T13:57:25.857Z

Reserved: 2021-01-13T00:00:00

Link: CVE-2021-24020

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-07-09T19:15:08.197

Modified: 2024-11-21T05:52:13.380

Link: CVE-2021-24020

Redhat

No data.

{"containers": {"cna": {"affected": [{"product": "Fortinet FortiMail", "vendor": "Fortinet", "versions": [{"status": "affected", "version": "FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7"}]}], "descriptions": [{"lang": "en", "value": "A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Improper Access Control", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-07-09T18:17:26", "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "shortName": "fortinet"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://fortiguard.com/advisory/FG-IR-21-027"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "[email protected]", "ID": "CVE-2021-24020", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Fortinet FortiMail", "version": {"version_data": [{"version_value": "FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7"}]}}]}, "vendor_name": "Fortinet"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification."}]}, "impact": {"cvss": {"attackComplexity": "High", "attackVector": "Network", "availabilityImpact": "High", "baseScore": 6.9, "baseSeverity": "Medium", "confidentialityImpact": "High", "integrityImpact": "High", "privilegesRequired": "Low", "scope": "Unchanged", "userInteraction": "None", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Improper Access Control"}]}]}, "references": {"reference_data": [{"name": "https://fortiguard.com/advisory/FG-IR-21-027", "refsource": "CONFIRM", "url": "https://fortiguard.com/advisory/FG-IR-21-027"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T19:14:10.061Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://fortiguard.com/advisory/FG-IR-21-027"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-10-23T14:13:45.573210Z", "id": "CVE-2021-24020", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-25T13:57:25.857Z"}}]}, "cveMetadata": {"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "assignerShortName": "fortinet", "cveId": "CVE-2021-24020", "datePublished": "2021-07-09T18:17:26", "dateReserved": "2021-01-13T00:00:00", "dateUpdated": "2024-10-25T13:57:25.857Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*", "matchCriteriaId": "72F6AEF1-C5BF-4A9A-A843-A152AA168085", "versionEndIncluding": "6.2.7", "versionStartIncluding": "6.2.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*", "matchCriteriaId": "5DAB4EFB-D73F-4FC5-8FE7-278BADB9F78E", "versionEndExcluding": "6.4.5", "versionStartIncluding": "6.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification."}, {"lang": "es", "value": "Una falta de paso criptogr\u00e1fico en la implementaci\u00f3n del algoritmo hash digest en FortiMail versiones 6.4.0 hasta 6.4.4, y versiones 6.2.0 hasta 6.2.7, puede permitir a un atacante no autenticado manipular las URLs firmadas al a\u00f1adir m\u00e1s datos que permitan omitir la comprobaci\u00f3n de la firma"}], "id": "CVE-2021-24020", "lastModified": "2024-11-21T05:52:13.380", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "[email protected]", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "[email protected]", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "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:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2021-07-09T19:15:08.197", "references": [{"source": "[email protected]", "tags": ["Vendor Advisory"], "url": "https://fortiguard.com/advisory/FG-IR-21-027"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://fortiguard.com/advisory/FG-IR-21-027"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "[email protected]", "type": "Primary"}]}