CVE-2021-34753

Cisco Firepower Threat Defense Ethernet Industrial Protocol Policy Bypass Vulnerabilities

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.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: Cisco Cisco Firepower Threat Defense Software
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2021-34753?
CVE-2021-34753 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34753?
To fix CVE-2021-34753, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34753 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34753 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34753?
CVE-2021-34753 affects Cisco Cisco Firepower Threat Defense Software.
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