CVE-2017-12328: Input Validation
First published: Thu Nov 30 2017(Updated: )
A vulnerability in Session Initiation Protocol (SIP) call handling in Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition because the SIP process unexpectedly restarts. All active phone calls are dropped as the SIP process restarts. The vulnerability is due to incomplete input validation of the SIP packet header. An attacker could exploit this vulnerability by sending a malformed SIP packet to a targeted phone. An exploit could allow the attacker to cause a DoS condition because all phone calls are dropped when the SIP process unexpectedly restarts. Cisco Bug IDs: CSCvc62590.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Ip Phone 8800 Series Firmware | =11.0\(0.1\) |
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Reference Links
Frequently Asked Questions
What is the CVE ID of this vulnerability?
The CVE ID of this vulnerability is CVE-2017-12328.
What is the title of this vulnerability?
The title of this vulnerability is 'A vulnerability in Session Initiation Protocol (SIP) call handling in Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition because the SIP process unexpectedly restarts. All active phone calls are dropped as the SIP process restarts, causing a DoS condition.'
What is the severity of CVE-2017-12328?
The severity of CVE-2017-12328 is medium with a CVSS score of 5.8.
How can an attacker exploit this vulnerability?
An attacker can exploit this vulnerability by sending a specially crafted SIP message to the targeted Cisco IP Phone 8800 Series device.
Is there a fix available for this vulnerability?
Yes, Cisco has released a firmware update to address this vulnerability. Please refer to Cisco Security Advisory for more information.
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