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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| 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 | * | * |
| Wlan_handset_2210 | Nortel | * | * |
| Wlan_handset_2211 | Nortel | * | * |
| Wlan_handset_2212 | Nortel | * | * |
| Wlan_handset_6120 | Nortel | * | * |
| Wlan_handset_6140 | Nortel | * | * |