PT-2021-4621 · Cisco · Cisco Ftd

Cynthia Irvine + 2 · Published 2021-10-27 · Updated 2024-11-18 · CVE-2021-34753

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Cisco Firepower Threat Defense (FTD) Software (affected versions not specified)

Description A vulnerability in the payload inspection for Ethernet Industrial Protocol (ENIP) traffic could allow an unauthenticated, remote attacker to bypass configured rules for ENIP traffic. This issue 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, potentially allowing them to bypass configured access control and intrusion policies.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2021-05309

CVE-2021-34753

Affected Products

Cisco Ftd

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2021-34753 · Security Note
• https://bdu.fstec.ru/vul/2021-05309 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-enip-bypass-eFsxd8KP · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34753 · Vendor Advisory
• https://twitter.com/transilienceai/status/1857654652784787621 · Twitter Post
• https://twitter.com/transilienceai/status/1857654645344112942 · Twitter Post
• https://twitter.com/CVEnew/status/1857476951432159607 · Twitter Post
• https://twitter.com/transilienceai/status/1857654658933608689 · Twitter Post
• https://t.me/cvedetector/11128 · Telegram Post
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-enip-bypass-eFsxd8KP · Note