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Category:   Device (VoIP/Phone/FAX)  >   Cisco IP Phones Vendors:   Cisco
Cisco IP Phones 9900 Series RTP Packet Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1032748
SecurityTracker URL:
CVE Reference:   CVE-2015-4226   (Links to External Site)
Updated:  Jun 30 2015
Original Entry Date:  Jun 30 2015
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9900 Series; 9.3(2)
Description:   A vulnerability was reported in Cisco IP Phones 9900 Series. A remote user can cause denial of service conditions on the target system.

A remote user can call the target user's register phone and, after the target user answers the phone, send specially crafted real-time transport protocol (RTP) packets to cause the target user's phone to become unresponsive.

The vendor has assigned bug ID CSCur39976 to this vulnerability.

Impact:   A remote user can cause the target user's phone to become unresponsive.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   State error

Message History:   None.

 Source Message Contents

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