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    CVE-2007-5638

    The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from the IP Phone, Business Communications Manager (BCM), and other product lines, use only 65536 different values in the 32-bit ID number field of an RUDP datagram, which makes it easier for remote attackers to guess the RUDP ID and spoof messages. NOTE: this can be leveraged for an eavesdropping attack by sending many Open Audio Stream messages.

    Published:Oct 23, 2007
    Last Modified:Apr 23, 2026
    EPS:Oct 23, 2007
    EPSS Score:0.00631
    CVSS Score:4.3

    Affected Products

    Vendor
    Nortel
    Product
    Business Communications Manager
    Vendor
    Nortel
    Product
    Centrex Ip Client Manager
    Vendor
    Nortel
    Product
    Centrex Ip Element Manager
    Vendor
    Nortel
    Product
    Communications Server
    Vendor
    Nortel
    Product
    Ip Audio Conference Phone 2033
    Vendor
    Nortel
    Product
    Ip Phone 1110
    Vendor
    Nortel
    Product
    Ip Phone 1120e
    Vendor
    Nortel
    Product
    Ip Phone 1140e
    Vendor
    Nortel
    Product
    Ip Phone 1150e
    Vendor
    Nortel
    Product
    Ip Phone 2001
    Vendor
    Nortel
    Product
    Ip Phone 2002
    Vendor
    Nortel
    Product
    Ip Phone 2004
    Vendor
    Nortel
    Product
    Ip Phone 2007
    Vendor
    Nortel
    Product
    Meridian Option 11c
    Vendor
    Nortel
    Product
    Meridian Option 51c
    Vendor
    Nortel
    Product
    Meridian Option 61c
    Vendor
    Nortel
    Product
    Meridian Option 81c
    Vendor
    Nortel
    Product
    Meridian Sl100
    Vendor
    Nortel
    Product
    Mobile Voice Client 2050
    Vendor
    Nortel
    Product
    Multimedia Communication Server 5100
    Vendor
    Nortel
    Product
    Multimedia Communication Server 5200
    Vendor
    Nortel
    Product
    Wlan Handset 2210
    Vendor
    Nortel
    Product
    Wlan Handset 2211
    Vendor
    Nortel
    Product
    Wlan Handset 2212
    Vendor
    Nortel
    Product
    Wlan Handset 6120
    Vendor
    Nortel
    Product
    Wlan Handset 6140

    Exploits

    http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_surveillance_mode_v1.0.txthttp://www.securityfocus.com/bid/26120http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_surveillance_mode_v1.0.txthttp://www.securityfocus.com/bid/26120

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-116 Excavation
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-169 Footprinting
    CAPEC-22 Exploiting Trust in Client
    CAPEC-224 Fingerprinting
    CAPEC-285 ICMP Echo Request Ping
    CAPEC-287 TCP SYN Scan
    CAPEC-290 Enumerate Mail Exchange (MX) Records
    CAPEC-291 DNS Zone Transfers
    CAPEC-292 Host Discovery
    CAPEC-293 Traceroute Route Enumeration
    CAPEC-294 ICMP Address Mask Request
    CAPEC-295 Timestamp Request
    CAPEC-296 ICMP Information Request
    CAPEC-297 TCP ACK Ping
    CAPEC-298 UDP Ping
    CAPEC-299 TCP SYN Ping
    CAPEC-300 Port Scanning
    CAPEC-301 TCP Connect Scan
    CAPEC-302 TCP FIN Scan
    CAPEC-303 TCP Xmas Scan
    CAPEC-304 TCP Null Scan
    CAPEC-305 TCP ACK Scan
    CAPEC-306 TCP Window Scan
    CAPEC-307 TCP RPC Scan
    CAPEC-308 UDP Scan
    CAPEC-309 Network Topology Mapping
    CAPEC-310 Scanning for Vulnerable Software
    CAPEC-312 Active OS Fingerprinting
    CAPEC-313 Passive OS Fingerprinting
    CAPEC-317 IP ID Sequencing Probe
    CAPEC-318 IP 'ID' Echoed Byte-Order Probe
    CAPEC-319 IP (DF) 'Don't Fragment Bit' Echoing Probe
    CAPEC-320 TCP Timestamp Probe
    CAPEC-321 TCP Sequence Number Probe
    CAPEC-322 TCP (ISN) Greatest Common Divisor Probe
    CAPEC-323 TCP (ISN) Counter Rate Probe
    CAPEC-324 TCP (ISN) Sequence Predictability Probe
    CAPEC-325 TCP Congestion Control Flag (ECN) Probe
    CAPEC-326 TCP Initial Window Size Probe
    CAPEC-327 TCP Options Probe
    CAPEC-328 TCP 'RST' Flag Checksum Probe
    CAPEC-329 ICMP Error Message Quoting Probe
    CAPEC-330 ICMP Error Message Echoing Integrity Probe
    CAPEC-472 Browser Fingerprinting
    CAPEC-497 File Discovery
    CAPEC-508 Shoulder Surfing
    CAPEC-573 Process Footprinting
    CAPEC-574 Services Footprinting
    CAPEC-575 Account Footprinting
    CAPEC-576 Group Permission Footprinting
    CAPEC-577 Owner Footprinting
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-616 Establish Rogue Location
    CAPEC-643 Identify Shared Files/Directories on System
    CAPEC-646 Peripheral Footprinting
    CAPEC-651 Eavesdropping
    CAPEC-79 Using Slashes in Alternate Encoding

    References

    http://osvdb.org/41770
    http://secunia.com/advisories/27234
    http://securityreason.com/securityalert/3272
    http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_surveillance_mode_v1.0.txt
    http://www.securityfocus.com/archive/1/482478/100/0/threaded
    http://www.securityfocus.com/bid/26120
    https://exchange.xforce.ibmcloud.com/vulnerabilities/37255
    https://exchange.xforce.ibmcloud.com/vulnerabilities/42881
    http://osvdb.org/41770
    http://secunia.com/advisories/27234
    http://securityreason.com/securityalert/3272
    http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_surveillance_mode_v1.0.txt
    http://www.securityfocus.com/archive/1/482478/100/0/threaded
    http://www.securityfocus.com/bid/26120
    https://exchange.xforce.ibmcloud.com/vulnerabilities/37255
    https://exchange.xforce.ibmcloud.com/vulnerabilities/42881

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High