description: A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.
problem types: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
affected:
{
vendor: Cisco
product: Cisco Adaptive Security Appliance (ASA) Software
versions:
version: 9.14.1, status: affected
version: 9.14.1.10, status: affected
version: 9.14.1.15, status: affected
version: 9.14.1.19, status: affected
version: 9.14.1.30, status: affected
version: 9.14.2, status: affected
version: 9.14.2.4, status: affected
version: 9.14.2.8, status: affected
version: 9.14.2.13, status: affected
version: 9.14.2.15, status: affected
version: 9.14.3, status: affected
version: 9.14.3.1, status: affected
version: 9.14.3.9, status: affected
version: 9.14.3.11, status: affected
version: 9.14.3.13, status: affected
version: 9.14.3.18, status: affected
version: 9.14.3.15, status: affected
version: 9.15.1, status: affected
version: 9.15.1.7, status: affected
version: 9.15.1.10, status: affected
version: 9.15.1.15, status: affected
version: 9.15.1.16, status: affected
version: 9.15.1.17, status: affected
version: 9.15.1.1, status: affected
version: 9.15.1.21, status: affected
}
{
vendor: Cisco
product: Cisco Firepower Threat Defense Software
versions:
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: 6.7.0, status: affected
version: 6.7.0.1, status: affected
version: 6.7.0.2, status: affected
version: 6.7.0.3, status: affected
}
{
vendor: Cisco
product: Cisco FirePOWER Services Software for ASA
versions:
version: N/A, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
baseScore: 7.7
baseSeverity: HIGH
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
]
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.