CVE-2018-0389: Cisco Small Business SPA514G IP Phones SIP Denial of Service Vulnerability
First published: Wed Mar 13 2019(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Spa514g Firmware | <=7.6.2sr2 | |
| Cisco Spa514g |
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Reference Links
Frequently Asked Questions
What is CVE-2018-0389?
CVE-2018-0389 is a vulnerability in the implementation of Session Initiation Protocol (SIP) processing in Cisco Small Business SPA514G IP Phones.
What is the severity of CVE-2018-0389?
CVE-2018-0389 has a severity rating of 7.5 (high).
How does CVE-2018-0389 affect Cisco Small Business SPA514G IP Phones?
CVE-2018-0389 could allow an unauthenticated, remote attacker to cause an affected device to become unresponsive, resulting in a denial of service (DoS) condition.
How can I fix CVE-2018-0389?
At the time of writing, there is no available fix or patch for CVE-2018-0389. It is recommended to apply the latest updates from Cisco when they become available.
Where can I find more information about CVE-2018-0389?
You can find more information about CVE-2018-0389 in the following references: [http://www.securityfocus.com/bid/107402](http://www.securityfocus.com/bid/107402), [https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190313-sip](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190313-sip).
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