CVE Vulnerabilities

CVE-2021-34754

Published: Oct 27, 2021 | Modified: Nov 07, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

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.

Affected Software

Name Vendor Start Version End Version
Firepower_management_center Cisco 2.9.12 (including) 2.9.12 (including)
Firepower_management_center Cisco 2.9.14.0 (including) 2.9.14.0 (including)
Firepower_management_center Cisco 2.9.16 (including) 2.9.16 (including)
Firepower_management_center Cisco 2.9.17 (including) 2.9.17 (including)
Firepower_management_center Cisco 2.9.18 (including) 2.9.18 (including)
Firepower_threat_defense Cisco 6.4.0 (including) 6.4.0.13 (excluding)
Firepower_threat_defense Cisco 6.6.0 (including) 6.6.5.1 (excluding)
Firepower_threat_defense Cisco 6.7.0 (including) 6.7.0.3 (excluding)
Firepower_threat_defense Cisco 7.0.0 (including) 7.0.1 (excluding)

References