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

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

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/22/2021
Created
07/23/2021
Added
07/22/2021
Modified
12/01/2023

Description

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. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-dos-7uZWwSEy

Solution(s)

  • cisco-asa-update-latest

References

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