// For flags

CVE-2019-1933

Cisco Email Security Appliance Content Filter Bypass Vulnerability

Severity Score

7.4
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability in the email message scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured filters on the device. The vulnerability is due to improper input validation of certain email fields. An attacker could exploit this vulnerability by sending a crafted email message to a recipient protected by the ESA. A successful exploit could allow the attacker to bypass configured message filters and inject arbitrary scripting code inside the email body. The malicious code is not executed by default unless the recipient's email client is configured to execute scripts contained in emails.

Una vulnerabilidad en el escaneo de mensajes de correo electrónico del software AsyncOS de Cisco para Email Security Appliance (ESA) de Cisco, podría permitir a un atacante remoto no identificado omitir los filtros configurados en el dispositivo. La vulnerabilidad es debido a la comprobación de entrada inapropiada de ciertos campos de correo electrónico. Un atacante podría aprovechar esta vulnerabilidad mediante el envío de un mensaje de correo electrónico especialmente diseñado a un destinatario protegido por la ESA. Una explotación con éxito podría permitir al atacante omitir los filtros de mensajes configurados e inyectar código scripting arbitrario dentro del cuerpo del correo electrónico. El código malicioso no se ejecuta por defecto a menos que el cliente de correo electrónico del destinatario esté configurado para ejecutar los scripts contenidos en los correos electrónicos.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2018-12-06 CVE Reserved
  • 2019-07-06 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-11-19 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Email Security Appliance
Search vendor "Cisco" for product "Email Security Appliance"
 11.1.2-023
Search vendor "Cisco" for product "Email Security Appliance" and version "11.1.2-023"
-
Affected