// For flags

CVE-2017-6763

 

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) 2.1.4 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected application does not properly validate Fragmentation Unit (FU-A) protocol packets. An attacker could exploit this vulnerability by sending a crafted H.264 FU-A packet through the affected application. A successful exploit could allow the attacker to cause a DoS condition on the affected system due to an unexpected restart of the CMS media process on the system. Although the CMS platform continues to operate and only the single, affected CMS media process is restarted, a brief interruption of media traffic for certain users could occur. Cisco Bug IDs: CSCve10131.

Una vulnerabilidad en la implementación del protocolo H.264 en Cisco Meeting Server (CMS) 2.1.4 podría permitir que un atacante remoto sin autenticar provoque una denegación de servicio (DoS) en un sistema afectado. La vulnerabilidad existe porque la aplicación afectada no valida correctamente los paquetes de protocolo Fragmentation Unit (FU-A). Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete H.264 FU-A manipulado usando la aplicación afectada. Una ejecución exitosa de la vulnerabilidad permitiría que el atacante provocase una situación de denegación del servicio en el sistema afectado debido a un reinicio inesperado del proceso CMS media en el sistema. Aunque la plataforma CMS sigue operando y solo se reinicia el proceso CMS media afectado, podría interrumpirse brevemente el tráfico multimedia para ciertos usuarios. Cisco Bug IDs: CSCve10131.

*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
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-03-09 CVE Reserved
  • 2017-08-07 CVE Published
  • 2023-05-23 EPSS Updated
  • 2024-08-05 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"
Meeting Server
Search vendor "Cisco" for product "Meeting Server"
2.1.4
Search vendor "Cisco" for product "Meeting Server" and version "2.1.4"
-
Affected