cbcvebase.
CVE-2021-1402
published 2021-04-29

CVE-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…

PriorityP347high8.6CVSS 3.1
AVNACLPRNUINSCCNINAH
EPSS
1.39%
69.4th percentile
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
VendorProductVersion rangeFixed in
ciscocisco_firepower_threat_defense_software
ciscofirepower_threat_defense
ciscofirepower_threat_defense>= 6.3.0 < 6.4.06.4.0
ciscofirepower_threat_defense>= 6.5.0 < 6.6.06.6.0

CVSS provenance

nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
nvdv3.08.6HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
vendor_cisco8.6HIGH
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