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THREATINT
PUBLISHED

CVE-2021-34754

Cisco Firepower Threat Defense Software Ethernet Industrial Protocol Policy Bypass Vulnerabilities



Assignercisco
Reserved2021-06-15
Published2021-10-27
Updated2024-11-07

Description

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.



MEDIUM: 5.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Product status

Any version
affected

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-enip-bypass-eFsxd8KP (20211027 Cisco Firepower Threat Defense Software Ethernet Industrial Protocol Policy Bypass Vulnerabilities) vendor-advisory

cve.org CVE-2021-34754

nvd.nist.gov CVE-2021-34754

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