CVE-2021-24018

A buffer underwrite vulnerability in the firmware verification routine of FortiOS before 7.0.1 may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image.

CVSS v3 8.8 HIGH
CVSS v2.0 5.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 6.5 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://fortiguard.com/advisory/FG-IR-21-046	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios:7.0.0:::::::*

History

No history.

Information

Published : 2021-08-04 15:15

Updated : 2023-08-08 14:21

NVD link : CVE-2021-24018

Mitre link : CVE-2021-24018

CVE.ORG link : CVE-2021-24018

JSON object : View

Products Affected

fortinet

fortios

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2021-24018", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 6.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "psirt@fortinet.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 0.9}]}, "published": "2021-08-04T15:15:08.983", "references": [{"url": "https://fortiguard.com/advisory/FG-IR-21-046", "tags": ["Vendor Advisory"], "source": "psirt@fortinet.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "A buffer underwrite vulnerability in the firmware verification routine of FortiOS before 7.0.1 may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image."}, {"lang": "es", "value": "Una vulnerabilidad de subescritura del b\u00fafer en la rutina de verificaci\u00f3n del firmware de FortiOS versiones anteriores a 7.0.1, puede permitir a un atacante ubicado en la red adyacente ejecutar potencialmente c\u00f3digo arbitrario por medio de una imagen de firmware espec\u00edficamente dise\u00f1ada"}], "lastModified": "2023-08-08T14:21:49.707", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C628FD97-5D1C-48BC-8A4F-932AEFEC2F5D", "versionEndExcluding": "6.2.10"}, {"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "868E19AD-D2ED-4424-9CA1-56E07BFBC0DB", "versionEndExcluding": "6.4.7", "versionStartIncluding": "6.4.0"}, {"criteria": "cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79FEE7F6-F72E-4A43-883C-0CF492DF355B"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@fortinet.com"}