// For flags

CVE-2019-12652

Cisco Catalyst 4000 Series Switches TCP Denial of Service Vulnerability

Severity Score

7.5
*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 ingress packet processing function of Cisco IOS Software for Cisco Catalyst 4000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when processing TCP packets directed to the device on specific Cisco Catalyst 4000 Series Switches. An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device. A successful exploit could cause the affected device to run out of buffer resources, impairing operations of control plane and management plane protocols, resulting in a DoS condition. This vulnerability can be triggered only by traffic that is destined to an affected device and cannot be exploited using traffic that transits an affected device.

Una vulnerabilidad en la función de procesamiento de paquetes de ingreso del software Cisco IOS para Cisco Catalyst 4000 Series Switches, podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) sobre un dispositivo afectado. La vulnerabilidad es debido a la asignación de recursos inapropiada cuando se procesan paquetes TCP direccionados al dispositivo sobre Cisco Catalyst 4000 Series Switches específicos. Un atacante podría explotar esta vulnerabilidad mediante el envío de secuencias TCP diseñadas hacia un dispositivo afectado. Una explotación con éxito podría causar que el dispositivo afectado se quede sin recursos de almacenamiento intermedio, perjudicando las operaciones del plano de control y los protocolos del plano de administración, resultando en una condición DoS. Esta vulnerabilidad solo puede ser activada por el tráfico que está destinado hacia un dispositivo afectado y no puede ser explotado utilizando el tráfico que transita en un dispositivo afectado.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-06-04 CVE Reserved
  • 2019-09-25 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-399: Resource Management Errors
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"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(3\)e1
Search vendor "Cisco" for product "Ios" and version "15.2\(3\)e1"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4500 Supervisor Engine 6-e
Search vendor "Cisco" for product "Catalyst 4500 Supervisor Engine 6-e"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(3\)e1
Search vendor "Cisco" for product "Ios" and version "15.2\(3\)e1"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4500 Supervisor Engine 6l-e
Search vendor "Cisco" for product "Catalyst 4500 Supervisor Engine 6l-e"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(3\)e1
Search vendor "Cisco" for product "Ios" and version "15.2\(3\)e1"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4900m
Search vendor "Cisco" for product "Catalyst 4900m"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(3\)e1
Search vendor "Cisco" for product "Ios" and version "15.2\(3\)e1"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4948e
Search vendor "Cisco" for product "Catalyst 4948e"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(3\)e1
Search vendor "Cisco" for product "Ios" and version "15.2\(3\)e1"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4948e-f
Search vendor "Cisco" for product "Catalyst 4948e-f"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(4\)e3
Search vendor "Cisco" for product "Ios" and version "15.2\(4\)e3"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4500 Supervisor Engine 6-e
Search vendor "Cisco" for product "Catalyst 4500 Supervisor Engine 6-e"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(4\)e3
Search vendor "Cisco" for product "Ios" and version "15.2\(4\)e3"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4500 Supervisor Engine 6l-e
Search vendor "Cisco" for product "Catalyst 4500 Supervisor Engine 6l-e"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(4\)e3
Search vendor "Cisco" for product "Ios" and version "15.2\(4\)e3"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4900m
Search vendor "Cisco" for product "Catalyst 4900m"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(4\)e3
Search vendor "Cisco" for product "Ios" and version "15.2\(4\)e3"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4948e
Search vendor "Cisco" for product "Catalyst 4948e"
--
Safe
Cisco
Search vendor "Cisco"
Ios
Search vendor "Cisco" for product "Ios"
15.2\(4\)e3
Search vendor "Cisco" for product "Ios" and version "15.2\(4\)e3"
-
Affected
in Cisco
Search vendor "Cisco"
Catalyst 4948e-f
Search vendor "Cisco" for product "Catalyst 4948e-f"
--
Safe