// For flags

CVE-2021-1378

Cisco StarOS 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

Attend
*SSVC
Descriptions

A vulnerability in the SSH service of the Cisco StarOS operating system could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error that may occur under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to prevent the targeted service from receiving any traffic, which would lead to a DoS condition on the affected device.

Una vulnerabilidad en el servicio SSH del sistema operativo Cisco StarOS podría permitir a un atacante remoto no autenticado causar que un dispositivo afectado dejara de procesar el tráfico, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a un error lógico que puede ocurrir en condiciones de tráfico específicas. Un atacante podría explotar esta vulnerabilidad mediante el envío una serie de paquetes diseñados hacia un dispositivo afectado. Una explotación con éxito podría permitir al atacante impedir que el servicio apuntado reciba cualquier tráfico, lo que conllevaría a una condición de DoS en el 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
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-11-13 CVE Reserved
  • 2021-02-17 CVE Published
  • 2023-11-03 EPSS Updated
  • 2024-11-08 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"
 Staros
Search vendor "Cisco" for product "Staros"
 >= 21.9.0 <= 21.19.10
Search vendor "Cisco" for product "Staros" and version " >= 21.9.0 <= 21.19.10"
-
Affected