CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2021-34753

A vulnerability 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. This vulnerability is due to incomplete processing during deep packet inspection for ENIP packets. An attacker could exploit this vulnerability 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 trigger and drop for the ENIP packet.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.001

EPSS Ranking 17.1%

CVSS Severity

CVSS v3 Score 5.8

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-enip-bypass-eFsxd8KP

Products affected by CVE-2021-34753

Cisco » Firepower Threat Defense Software » Version: 6.2.3

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3
Cisco » Firepower Threat Defense Software » Version: 6.2.3.1

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.1
Cisco » Firepower Threat Defense Software » Version: 6.2.3.10

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.10
Cisco » Firepower Threat Defense Software » Version: 6.2.3.11

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.11
Cisco » Firepower Threat Defense Software » Version: 6.2.3.12

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.12
Cisco » Firepower Threat Defense Software » Version: 6.2.3.13

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.13
Cisco » Firepower Threat Defense Software » Version: 6.2.3.14

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.14
Cisco » Firepower Threat Defense Software » Version: 6.2.3.15

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.15
Cisco » Firepower Threat Defense Software » Version: 6.2.3.16

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.16
Cisco » Firepower Threat Defense Software » Version: 6.2.3.17

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.17
Cisco » Firepower Threat Defense Software » Version: 6.2.3.18

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.18
Cisco » Firepower Threat Defense Software » Version: 6.2.3.2

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.2
Cisco » Firepower Threat Defense Software » Version: 6.2.3.3

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.3
Cisco » Firepower Threat Defense Software » Version: 6.2.3.4

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.4
Cisco » Firepower Threat Defense Software » Version: 6.2.3.5

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.5
Cisco » Firepower Threat Defense Software » Version: 6.2.3.6

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.6
Cisco » Firepower Threat Defense Software » Version: 6.2.3.7

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.7
Cisco » Firepower Threat Defense Software » Version: 6.2.3.8

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.8
Cisco » Firepower Threat Defense Software » Version: 6.2.3.9

cpe:2.3:a:cisco:firepower_threat_defense_software:6.2.3.9
Cisco » Firepower Threat Defense Software » Version: 6.4.0

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0
Cisco » Firepower Threat Defense Software » Version: 6.4.0.1

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.1
Cisco » Firepower Threat Defense Software » Version: 6.4.0.10

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.10
Cisco » Firepower Threat Defense Software » Version: 6.4.0.11

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.11
Cisco » Firepower Threat Defense Software » Version: 6.4.0.12

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.12
Cisco » Firepower Threat Defense Software » Version: 6.4.0.2

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.2
Cisco » Firepower Threat Defense Software » Version: 6.4.0.3

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.3
Cisco » Firepower Threat Defense Software » Version: 6.4.0.4

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.4
Cisco » Firepower Threat Defense Software » Version: 6.4.0.5

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.5
Cisco » Firepower Threat Defense Software » Version: 6.4.0.6

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.6
Cisco » Firepower Threat Defense Software » Version: 6.4.0.7

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.7
Cisco » Firepower Threat Defense Software » Version: 6.4.0.8

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.8
Cisco » Firepower Threat Defense Software » Version: 6.4.0.9

cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.9
Cisco » Firepower Threat Defense Software » Version: 6.6.0

cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.0
Cisco » Firepower Threat Defense Software » Version: 6.6.0.1

cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.0.1
Cisco » Firepower Threat Defense Software » Version: 6.6.1

cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.1
Cisco » Firepower Threat Defense Software » Version: 6.6.3

cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.3
Cisco » Firepower Threat Defense Software » Version: 6.6.4

cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.4
Cisco » Firepower Threat Defense Software » Version: 6.6.5

cpe:2.3:a:cisco:firepower_threat_defense_software:6.6.5
Cisco » Firepower Threat Defense Software » Version: 6.7.0

cpe:2.3:a:cisco:firepower_threat_defense_software:6.7.0
Cisco » Firepower Threat Defense Software » Version: 6.7.0.1

cpe:2.3:a:cisco:firepower_threat_defense_software:6.7.0.1
Cisco » Firepower Threat Defense Software » Version: 6.7.0.2

cpe:2.3:a:cisco:firepower_threat_defense_software:6.7.0.2
Cisco » Firepower Threat Defense Software » Version: 7.0.0

cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.0

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Vulnerability Details CVE-2021-34753

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