// For flags

CVE-2018-0389

Cisco Small Business SPA514G IP Phones SIP 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

Attend
*SSVC
Descriptions

A vulnerability in the implementation of Session Initiation Protocol (SIP) processing in Cisco Small Business SPA514G IP Phones could allow an unauthenticated, remote attacker to cause an affected device to become unresponsive, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of SIP request messages by an affected device. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to become unresponsive, resulting in a DoS condition that persists until the device is restarted manually. Cisco has not released software updates that address this vulnerability. This vulnerability affects Cisco Small Business SPA514G IP Phones that are running firmware release 7.6.2SR2 or earlier.

Una vulnerabilidad en la implementación del procesamiento de Session Initiation Protocol (SIP) en Cisco Small Business SPA514G IP Phones podría permitir que un atacante remoto sin autenticar haga que el dispositivo afectado no responda, lo que da como resultado una condición de denegación de servicio (DoS). Esta vulnerabilidad se debe a un procesamiento incorrecto de los mensajes de petición SIP por parte de un dispositivo afectado. Un atacante podría explotar esta vulnerabilidad enviando mensajes SIP manipulados a un dispositivo afectado. Un exploit con éxito, podría permitir que el atacante consiga que el dispositivo afectado no responda, lo que da como resultado una condición de DoS que persista hasta que el dispositivo se reinicie manualmente. Cisco no ha publicado actualizaciones de software que aborden esta vulnerabilidad. Esta vulnerabilidad afecta a Cisco Small Business SPA514G IP Phones que ejecuten la distribución 7.6.2SR2 o anterior del firmware.

*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
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2017-11-27 CVE Reserved
  • 2019-03-13 CVE Published
  • 2024-08-03 EPSS Updated
  • 2024-11-19 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"
 Spa514g Firmware
Search vendor "Cisco" for product "Spa514g Firmware"
 <= 7.6.2sr2
Search vendor "Cisco" for product "Spa514g Firmware" and version " <= 7.6.2sr2"
-
Affected
in Cisco
Search vendor "Cisco"
 Spa514g
Search vendor "Cisco" for product "Spa514g"
--
Safe