CVE-2018-0389

Cisco Small Business SPA514G IP Phones SIP Denial of Service Vulnerability

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.46%
Vendor Advisory cisco.com
Affected: Cisco Cisco Small Business SPA500 Series IP Phones
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190313-sip vendor advisory
http://www.securityfocus.com/bid/107402 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-0389?
CVE-2018-0389 has been scored as a high severity vulnerability.
How to fix CVE-2018-0389?
To fix CVE-2018-0389, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0389 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-0389 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0389?
CVE-2018-0389 affects Cisco Cisco Small Business SPA500 Series IP Phones.
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