Nortel IP Phone UNIStim packet spoofing denial of service
| nortel-ipphone-spoof-dos (37253) |  Low Risk |
Description:
Multiple Nortel IP Phones are vulnerable to a denial of service attack, caused by improper handling of spoofed packets. By flooding a vulnerable device with valid UNIStim messages containing a spoofed server source address, a remote attacker could cause the device to become unresponsive. The device must be rebooted to regain normal functionality.
*CVSS:
| Base Score: | 6.1 |
| Access Vector: | Adjacent Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 4.8 |
| Exploitability: | Proof-of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to Nortel Technical Support Security Advisory Bulletin 2007008386 for patch, upgrade, or suggested workaround information. See References.
References:
- COMPASS SECURITY ADVISORY: October, 18th 2007: IP Phone Flooding Denial of Service.
- Nortel Technical Support Security Advisory Bulletin 2007008386: Potential DoS Vulnerability - IP Phone Freeze to Offline State.
- BID-26122: Nortel IP Phones UNIStim Messages Denial of Service Vulnerability
- CVE-2007-5639: The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.
Platforms Affected:
- Nortel Business Communications Manager 1000
- Nortel Business Communications Manager 200
- Nortel Business Communications Manager 400
- Nortel Business Communications Manager 50
- Nortel Business Communications Manager 50a
- Nortel Business Communications Manager 50e
- Nortel Business Communications Manager SRG200
- Nortel Business Communications Manager SRG50
- Nortel Centrex IP Client Manager
- Nortel Centrex IP Element Manager
- Nortel CS1000e
- Nortel CS1000m
- Nortel cs1000s
- Nortel CS2100
- Nortel IP Audio Conference Phone 2033
- Nortel IP Phone 1110
- Nortel IP Phone 1120E
- Nortel IP Phone 1140E
- Nortel IP Phone 1150E
- Nortel IP Phone 2001
- Nortel IP Phone 2002
- Nortel IP Phone 2004
- Nortel IP Phone 2007
- Nortel Meridian Option 11C
- Nortel Meridian Option 51C
- Nortel Meridian Option 61C
- Nortel Meridian Option 81C
- Nortel Meridian SL100
- Nortel Mobile Voice Client 2050
- Nortel Multimedia Communication Server 5100
- Nortel Multimedia Communication Server 5200
- Nortel WLAN Handset 2210
- Nortel WLAN Handset 2211
- Nortel WLAN Handset 2212
- Nortel WLAN Handset 6120
- Nortel WLAN Handset 6140
Reported:
Oct 17, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.