CVE-2020-27124 HIGH

CVE-2020-27124: Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability

Vendor Cisco
Product Cisco Adaptive Security Appliance (ASA) Software
Weakness CWE-457
Published November 18, 2024
Last update November 18, 2024

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/RL:X/RC:X/E:X

What the vulnerability does

01Description

A vulnerability in the SSL/TLS handler of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause the affected device to reload unexpectedly, leading to a denial of service (DoS) condition. The vulnerability is due to improper error handling on established SSL/TLS connections. An attacker could exploit this vulnerability by establishing an SSL/TLS connection with the affected device and then sending a malicious SSL/TLS message within that connection. A successful exploit could allow the attacker to cause the device to reload.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Key dates

02Disclosure timeline

November 18, 2024 CVE published
November 18, 2024 Record updated