CVE-2017-12311

Severity Score

5.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the H.264 decoder function of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a Cisco Meeting Server media process to restart unexpectedly when it receives an illegal H.264 frame. The vulnerability is triggered by an H.264 frame that has an invalid picture parameter set (PPS) value. An attacker could exploit this vulnerability by sending a malformed H.264 frame to the targeted device. An exploit could allow the attacker to cause a denial of service (DoS) condition because the media process could restart. The media session should be re-established within a few seconds, during which there could be a brief interruption in service. Cisco Bug IDs: CSCvg12559.

La función de descodificación H.264 de Cisco Meeting Server podría permitir que un atacante remoto sin autenticar provoque que un proceso multimedia de Cisco Meeting Server se reinicie de forma inesperada cuando recibe una tramaH.264 ilegal. Esta vulnerabilidad es desencadenada por una trama H.264 que tiene un valor de PPS (picture parameter set) inválido. Un atacante podría explotar esta vulnerabilidad enviando una trama H.264 mal formada al dispositivo afectado. Su explotación podría permitir a un atacante provocar una denegación de servicio por el reinicio inesperado del proceso multimedia. La sesión multimedia debería restablecerse en unos pocos segundos, durante los cuales podría haber una breve interrupción del servicio. Cisco Bug IDs: CSCvg12559.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

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:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-08-03 CVE Reserved
2017-11-16 CVE Published
2023-05-19 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-399: Resource Management Errors

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/101855	Third Party Advisory
http://www.securitytracker.com/id/1039827	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-cms	2019-10-09

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"				2.0 Search vendor "Cisco" for product "Meeting Server" and version "2.0"		-		Affected
Cisco Search vendor "Cisco"		Meeting Server Search vendor "Cisco" for product "Meeting Server"				2.1.0 Search vendor "Cisco" for product "Meeting Server" and version "2.1.0"		-		Affected
Cisco Search vendor "Cisco"		Meeting Server Search vendor "Cisco" for product "Meeting Server"				2.2.0 Search vendor "Cisco" for product "Meeting Server" and version "2.2.0"		-		Affected
Cisco Search vendor "Cisco"		Meeting Server Search vendor "Cisco" for product "Meeting Server"				2.3.0 Search vendor "Cisco" for product "Meeting Server" and version "2.3.0"		-		Affected