description: A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information.
This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses SSL decryption policies. An attacker could exploit this vulnerability by sending crafted TLS messages to an affected device, which would act as an oracle and allow the attacker to carry out a chosen-ciphertext attack. A successful exploit could allow the attacker to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions to the affected device.
problem types: Observable Discrepancy
affected:
{
vendor: Cisco
product: Cisco Firepower Threat Defense Software
versions:
version: 6.2.3, status: affected
version: 6.2.3.1, status: affected
version: 6.2.3.2, status: affected
version: 6.2.3.3, status: affected
version: 6.2.3.4, status: affected
version: 6.2.3.5, status: affected
version: 6.2.3.6, status: affected
version: 6.2.3.7, status: affected
version: 6.2.3.8, status: affected
version: 6.2.3.10, status: affected
version: 6.2.3.11, status: affected
version: 6.2.3.9, status: affected
version: 6.2.3.12, status: affected
version: 6.2.3.13, status: affected
version: 6.2.3.14, status: affected
version: 6.2.3.15, status: affected
version: 6.2.3.16, status: affected
version: 6.2.3.17, status: affected
version: 6.2.3.18, status: affected
version: 6.6.0, status: affected
version: 6.6.0.1, status: affected
version: 6.6.1, status: affected
version: 6.6.3, status: affected
version: 6.6.4, status: affected
version: 6.6.5, status: affected
version: 6.6.5.1, status: affected
version: 6.6.5.2, status: affected
version: 6.4.0, status: affected
version: 6.4.0.1, status: affected
version: 6.4.0.3, status: affected
version: 6.4.0.2, status: affected
version: 6.4.0.4, status: affected
version: 6.4.0.5, status: affected
version: 6.4.0.6, status: affected
version: 6.4.0.7, status: affected
version: 6.4.0.8, status: affected
version: 6.4.0.9, status: affected
version: 6.4.0.10, status: affected
version: 6.4.0.11, status: affected
version: 6.4.0.12, status: affected
version: 6.4.0.13, status: affected
version: 6.4.0.14, status: affected
version: 6.7.0, status: affected
version: 6.7.0.1, status: affected
version: 6.7.0.2, status: affected
version: 6.7.0.3, status: affected
version: 7.0.0, status: affected
version: 7.0.0.1, status: affected
version: 7.0.1, status: affected
version: 7.0.1.1, status: affected
version: 7.0.2, status: affected
version: 7.0.2.1, status: affected
version: 7.0.3, status: affected
version: 7.1.0, status: affected
version: 7.1.0.1, status: affected
version: 7.1.0.2, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
baseScore: 5.3
baseSeverity: MEDIUM
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
]
exploits: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.