CVE-2020-3196

Description

A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust memory resources on the affected device, leading to a denial of service (DoS) condition. The vulnerability is due to improper resource management for inbound SSL/TLS connections. An attacker could exploit this vulnerability by establishing multiple SSL/TLS connections with specific conditions to the affected device. A successful exploit could allow the attacker to exhaust the memory on the affected device, causing the device to stop accepting new SSL/TLS connections and resulting in a DoS condition for services on the device that process SSL/TLS traffic. Manual intervention is required to recover an affected device.

CvssV3 impact

Version

3.1

VectorString

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

AttackVector

NETWORK

AttackComplexity

LOW

PrivilegesRequired

NONE

UserInteraction

NONE

Scope

CHANGED

ConfidentialityImpact

NONE

IntegrityImpact

NONE

AvailabilityImpact

HIGH

BaseScore

8.6

BaseSeverity

HIGH

CvssV2 impact

Version

2.0

VectorString

AV:N/AC:L/Au:N/C:N/I:N/A:P

AccessVector

NETWORK

AccessComplexity

LOW

Authentication

NONE

ConfidentialityImpact

NONE

IntegrityImpact

NONE

AvailabilityImpact

PARTIAL

BaseScore

5