CVE-2021-1402
published 2021-04-29CVE-2021-1402: A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker…
high8.6CVSS 3.1
AVNACLPRNUINSCCNINAH
A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_firepower_threat_defense_software | — | — |
| cisco | firepower_threat_defense | — | — |
| cisco | firepower_threat_defense | >= 6.3.0 < 6.4.0 | 6.4.0 |
| cisco | firepower_threat_defense | >= 6.5.0 < 6.6.0 | 6.6.0 |