cve-2021-24020
Vulnerability from cvelistv5
Published
2021-07-09 18:17
Modified
2024-10-25 13:57
Severity ?
EPSS score ?
Summary
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.
References
▼ | URL | Tags | |
---|---|---|---|
psirt@fortinet.com | https://fortiguard.com/advisory/FG-IR-21-027 | Vendor Advisory |
Impacted products
▼ | Vendor | Product |
---|---|---|
Fortinet | Fortinet FortiMail |
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"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": "psirt@fortinet.com", "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", 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"{\"cve\":{\"id\":\"CVE-2021-24020\",\"sourceIdentifier\":\"psirt@fortinet.com\",\"published\":\"2021-07-09T19:15:08.197\",\"lastModified\":\"2022-07-12T17:42:04.277\",\"vulnStatus\":\"Analyzed\",\"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\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"psirt@fortinet.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":1.6,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":7.5},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-347\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.0\",\"versionEndIncluding\":\"6.2.7\",\"matchCriteriaId\":\"72F6AEF1-C5BF-4A9A-A843-A152AA168085\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4.0\",\"versionEndExcluding\":\"6.4.5\",\"matchCriteriaId\":\"5DAB4EFB-D73F-4FC5-8FE7-278BADB9F78E\"}]}]}],\"references\":[{\"url\":\"https://fortiguard.com/advisory/FG-IR-21-027\",\"source\":\"psirt@fortinet.com\",\"tags\":[\"Vendor Advisory\"]}]}}" } }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.