CVE-2021-34753
Last modified
CVE-2021-34753 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.65% chance of exploitation in the next 30 days.
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Secure Firewall Threat Defense | < 6.4.0.13 |
| Cisco | Secure Firewall Threat Defense | >= 6.5.0, < 6.6.5.1 |
| Cisco | Secure Firewall Threat Defense | >= 6.7.0, < 6.7.0.3 |
| Cisco | Secure Firewall Threat Defense | 7.0.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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