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VULNERABILITIES

CVE-2021-34753 Details

Description

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.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-enip-bypass-eFsxd8KP [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-284Improper Access Control[email protected]

Affected Products

ProductVersions
cisco secure firewall threat defense
< 6.4.0.13
>= 6.5.0, < 6.6.5.1
>= 6.7.0, < 6.7.0.3
7.0.0

CPE

  • cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-34753
NVD Published Date:
Nov 15, 2024
NVD Last Modified:
Aug 11, 2026
Source:
[email protected]
CVE-2021-34753 Details - Not Deferred