// For flags

CVE-2020-27124

Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability

Severity Score

8.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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.

Una vulnerabilidad en el controlador SSL/TLS del software Cisco Adaptive Security Appliance (ASA) podría permitir que un atacante remoto no autenticado haga que el dispositivo afectado se recargue inesperadamente, lo que genera una condición de denegación de servicio (DoS). La vulnerabilidad se debe a un manejo inadecuado de errores en conexiones SSL/TLS establecidas. Un atacante podría aprovechar esta vulnerabilidad estableciendo una conexión SSL/TLS con el dispositivo afectado y luego enviando un mensaje SSL/TLS malicioso dentro de esa conexión. Una explotación exitosa podría permitir que el atacante haga que el dispositivo se recargue. Cisco ha publicado actualizaciones de software que solucionan esta vulnerabilidad. No existen workarounds que solucionen esta vulnerabilidad.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-10-13 CVE Reserved
  • 2024-11-18 CVE Published
  • 2024-11-18 CVE Updated
  • 2024-11-19 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-457: Use of Uninitialized Variable
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
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