Detections
Analytics
Cisco Firepower Threat Defense Software Ethernet Industrial Protocol Policy Bypass (cisco-sa-ftd-enip-bypass-eFsxd8KP)
high Nessus Plugin ID 155315
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco FTD Software is affected by multiple policy bypass vulnerabilities in its payload inspection component for Ethernet Industrial Protocol (ENIP) traffic due to incomplete deep packet inspection for ENIP traffic. An unauthenticated, remote attacker can exploit these, by sending specially crafted ENIP packets, to bypass configured access control and intrusion policies.Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvy02240See Also
http://www.nessus.org/u?7b6bd38b
https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74773
Plugin Details
Severity: High
ID: 155315
File Name: cisco-sa-ftd-enip-bypass-eFsxd8KP-ftd.nasl
Version: 1.5
Type: local
Family: CISCO
Published: 11/12/2021
Updated: 11/15/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2021-34754
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:cisco:firepower_threat_defense
Required KB Items: installed_sw/Cisco Firepower Threat Defense
Exploit Ease: No known exploits are available
Patch Publication Date: 10/27/2021
Vulnerability Publication Date: 10/27/2021
Reference Information
CVE: CVE-2021-34753, CVE-2021-34754