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Vulnerable Software

Vulnerability Details 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 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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 44.4%

CVSS Severity

CVSS v3 Score 8.6

CVSS v2 Score 7.8

References

Products affected by CVE-2021-1402

Cisco » Firepower Threat Defense » Version: 6.3.0

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0
Cisco » Firepower Threat Defense » Version: 6.3.0.1

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0.1
Cisco » Firepower Threat Defense » Version: 6.3.0.2

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0.2
Cisco » Firepower Threat Defense » Version: 6.3.0.3

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0.3
Cisco » Firepower Threat Defense » Version: 6.3.0.4

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0.4
Cisco » Firepower Threat Defense » Version: 6.3.0.5

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0.5
Cisco » Firepower Threat Defense » Version: 6.3.0.6

cpe:2.3:a:cisco:firepower_threat_defense:6.3.0.6
Cisco » Firepower Threat Defense » Version: 6.5.0

cpe:2.3:a:cisco:firepower_threat_defense:6.5.0
Cisco » Firepower Threat Defense » Version: 6.5.0.1

cpe:2.3:a:cisco:firepower_threat_defense:6.5.0.1
Cisco » Firepower Threat Defense » Version: 6.5.0.2

cpe:2.3:a:cisco:firepower_threat_defense:6.5.0.2
Cisco » Firepower Threat Defense » Version: 6.5.0.3

cpe:2.3:a:cisco:firepower_threat_defense:6.5.0.3
Cisco » Firepower Threat Defense » Version: 6.5.0.4

cpe:2.3:a:cisco:firepower_threat_defense:6.5.0.4
Cisco » Firepower Threat Defense » Version: 6.5.0.5

cpe:2.3:a:cisco:firepower_threat_defense:6.5.0.5
Cisco » Firepower Threat Defense Virtual » Version: N/A

cpe:2.3:a:cisco:firepower_threat_defense_virtual:-
Cisco » Asa 5512-X » Version: N/A

cpe:2.3:h:cisco:asa_5512-x:-
Cisco » Asa 5515-X » Version: N/A

cpe:2.3:h:cisco:asa_5515-x:-
Cisco » Asa 5525-X » Version: N/A

cpe:2.3:h:cisco:asa_5525-x:-
Cisco » Asa 5545-X » Version: N/A

cpe:2.3:h:cisco:asa_5545-x:-
Cisco » Asa 5555-X » Version: N/A

cpe:2.3:h:cisco:asa_5555-x:-
Cisco » Firepower 1010 » Version: N/A

cpe:2.3:h:cisco:firepower_1010:-
Cisco » Firepower 1120 » Version: N/A

cpe:2.3:h:cisco:firepower_1120:-
Cisco » Firepower 1140 » Version: N/A

cpe:2.3:h:cisco:firepower_1140:-
Cisco » Firepower 1150 » Version: N/A

cpe:2.3:h:cisco:firepower_1150:-
Cisco » Firepower 2110 » Version: N/A

cpe:2.3:h:cisco:firepower_2110:-
Cisco » Firepower 2120 » Version: N/A

cpe:2.3:h:cisco:firepower_2120:-
Cisco » Firepower 2130 » Version: N/A

cpe:2.3:h:cisco:firepower_2130:-
Cisco » Firepower 2140 » Version: N/A

cpe:2.3:h:cisco:firepower_2140:-
Cisco » Isa 3000 » Version: N/A

cpe:2.3:h:cisco:isa_3000:-

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Vulnerability Details CVE-2021-1402

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