CVE-2021-34754

Multiple vulnerabilities in the payload inspection for Ethernet Industrial Protocol (ENIP) traffic for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured rules for ENIP traffic. These vulnerabilities are due to incomplete processing during deep packet inspection for ENIP packets. An attacker could exploit these vulnerabilities by sending a crafted ENIP packet to the targeted interface. A successful exploit could allow the attacker to bypass configured access control and intrusion policies that should be activated for the ENIP packet.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-enip-bypass-eFsxd8KP	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:cisco:firepower_management_center:2.9.12:::::::*
	cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:::::::*
	cpe:2.3:a:cisco:firepower_management_center:2.9.16:::::::*
	cpe:2.3:a:cisco:firepower_management_center:2.9.17:::::::*
	cpe:2.3:a:cisco:firepower_management_center:2.9.18:::::::*
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::

History

No history.

Information

Published : 2021-10-27 19:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-34754

Mitre link : CVE-2021-34754

CVE.ORG link : CVE-2021-34754

JSON object : View

Products Affected

cisco

firepower_threat_defense
firepower_management_center

CWE

NVD-CWE-Other CWE-284

Improper Access Control

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These vulnerabilities are due to incomplete processing during deep packet inspection for ENIP packets. An attacker could exploit these vulnerabilities by sending a crafted ENIP packet to the targeted interface. A successful exploit could allow the attacker to bypass configured access control and intrusion policies that should be activated for the ENIP packet."}, {"lang": "es", "value": "M\u00faltiples vulnerabilidades en la inspecci\u00f3n de la carga \u00fatil del tr\u00e1fico del Protocolo Industrial Ethernet (ENIP) para el software Cisco Firepower Threat Defense (FTD) podr\u00edan permitir a un atacante remoto no autenticado omitir las reglas configuradas para el tr\u00e1fico ENIP. Estas vulnerabilidades son debido al procesamiento incompleto durante la inspecci\u00f3n profunda de paquetes para los paquetes ENIP. Un atacante podr\u00eda explotar estas vulnerabilidades enviando un paquete ENIP dise\u00f1ado a la interfaz objetivo. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir el control de acceso configurado y las pol\u00edticas de intrusi\u00f3n que deber\u00edan activarse para el paquete ENIP"}], "lastModified": "2023-11-07T03:36:18.717", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.12:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "22C4D542-9925-48F4-805D-FAAAE1498E94"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4ED9EFA4-D903-4F21-91CD-96E8D13B8EC6"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C96EC981-446D-4741-AEE0-F615A468A7FF"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.17:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "163F6B90-2F10-40CC-897B-FB58FA4568FD"}, {"criteria": "cpe:2.3:a:cisco:firepower_management_center:2.9.18:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5C8E9BF1-2B66-419E-B4C2-5D605BF459EC"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F461B5-E600-4C81-BA3C-1DBC90D4D438", "versionEndExcluding": "6.4.0.13", "versionStartIncluding": "6.4.0"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EDF402F7-DFC5-4A83-A209-9905AE54C49F", "versionEndExcluding": "6.6.5.1", "versionStartIncluding": "6.6.0"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "98DEDDAB-B8C5-4753-A208-94638E694FC1", "versionEndExcluding": "6.7.0.3", "versionStartIncluding": "6.7.0"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7B2F537A-A488-45B6-AD4B-48B7064AE84C", "versionEndExcluding": "7.0.1", "versionStartIncluding": "7.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "ykramarz@cisco.com"}