// For flags

CVE-2020-3132

Cisco Email Security Appliance Shortened URL Denial of Service Vulnerability

Severity Score

5.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the email message scanning feature of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause a temporary denial of service (DoS) condition on an affected device. The vulnerability is due to inadequate parsing mechanisms for specific email body components. An attacker could exploit this vulnerability by sending a malicious email containing a high number of shortened URLs through an affected device. A successful exploit could allow the attacker to consume processing resources, causing a DoS condition on an affected device. To successfully exploit this vulnerability, certain conditions beyond the control of the attacker must occur.

Una vulnerabilidad en la funcionalidad email message scanning de Cisco AsyncOS Software para Cisco Email Security Appliance (ESA), podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) temporal en un dispositivo afectado. La vulnerabilidad es debido a mecanismos de análisis inadecuados para componentes específicos del cuerpo del correo electrónico. Un atacante podría explotar esta vulnerabilidad mediante el envío de un correo electrónico malicioso que contenga una gran cantidad de URL acortadas por medio de un dispositivo afectado. Una explotación con éxito podría permitir al atacante consumir recursos de procesamiento, causando una condición de DoS sobre un dispositivo afectado. Para explotar con éxito esta vulnerabilidad, deben ocurrir determinadas condiciones más allá del control del atacante.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-12 CVE Reserved
  • 2020-02-19 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
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"
 Cloud Email Security
Search vendor "Cisco" for product "Cloud Email Security"
 < 12.5.1-037
Search vendor "Cisco" for product "Cloud Email Security" and version " < 12.5.1-037"
-
Affected
Cisco
Search vendor "Cisco"
 Email Security Appliance
Search vendor "Cisco" for product "Email Security Appliance"
 < 12.5.1-037
Search vendor "Cisco" for product "Email Security Appliance" and version " < 12.5.1-037"
-
Affected
Cisco
Search vendor "Cisco"
 Cloud Email Security
Search vendor "Cisco" for product "Cloud Email Security"
 < 13.0.0-375
Search vendor "Cisco" for product "Cloud Email Security" and version " < 13.0.0-375"
-
Affected
Cisco
Search vendor "Cisco"
 Email Security Appliance
Search vendor "Cisco" for product "Email Security Appliance"
 < 13.0.0-375
Search vendor "Cisco" for product "Email Security Appliance" and version " < 13.0.0-375"
-
Affected