// For flags

CVE-2019-1676

Cisco Meeting Server SIP Processing Denial of Service Vulnerability

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 Session Initiation Protocol (SIP) call processing of Cisco Meeting Server (CMS) software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Cisco Meeting Server. The vulnerability is due to insufficient validation of Session Description Protocol (SDP) messages. An attacker could exploit this vulnerability by sending a crafted SDP message to the CMS call bridge. An exploit could allow the attacker to cause the CMS to reload, causing a DoS condition for all connected clients. Versions prior to 2.3.9 are affected.

Una vulnerabilidad en el procesamiento de llamadas SIP (Session Initiation Protocol) del software Cisco Meeting Server (CMS) podría permitir que un atacante remoto no autenticado provoque una condición de denegación de servicio (DoS) en Cisco Meeting Server. La vulnerabilidad se debe a una validación insuficiente de los mensajes SDP (Session Description Protocol). Un atacante podría explotar esta vulnerabilidad mediante el envío de un mensaje SDP manipulado al call bridge de CMS. Si se explota con éxito, podría permitir que el atacante consiga que el CMS afectado se reinicie, provocando una denegación de servicio en todos los clientes conectados. Las versiones anteriores a la 2.3.9 se han visto afectadas.

*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
High
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
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-12-06 CVE Reserved
  • 2019-02-08 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-16 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"
 >= 2.3.0 < 2.3.9
Search vendor "Cisco" for product "Meeting Server" and version " >= 2.3.0 < 2.3.9"
-
Affected