CVE-2021-34753CWE-284broken-access-control

CVE-2021-34753

Medium · published November 15, 2024

CVSS v3.1
5.8
EPSS
1%
Percentile
51.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00663 · 51.1th percentile
Weakness
CWE-284 · Improper Access Control
Published
2024-11-15T22:15Z
Affected products (4)
ProductVersionsFixed in
cisco/secure_firewall_threat_defense< 6.4.0.136.4.0.13
cisco/secure_firewall_threat_defense≥ 6.5.0, < 6.6.5.16.6.5.1
cisco/secure_firewall_threat_defense≥ 6.7.0, < 6.7.0.36.7.0.3
cisco/secure_firewall_threat_defenseall versions—
References (1)
EPSS history
Timeline
  • 15 NOV 16:14Z
    Cisco Firepower Threat Defense Ethernet Industrial Protocol Policy Bypass Vulnerabilities
    cvelistv5