Nortel IP Phone UNIStim Open Audio Stream audio hijacking

nortel-ipphone-unistim-audio-hijacking (37255) The risk level is classified as MediumMedium Risk

Description:

Multiple Nortel IP Phones could allow a remote attacker to open an audio channel on the phone and perform remote eavesdropping. By sending a specially-crafted "Open Audio Stream" message containing a spoofed UNIStim message ID that matches the ID between the server and the device, an attacker could open an audio channel and use the phone as a remote eavesdropping device.

*CVSS:

Base Score: 4.3
  Access Vector: Adjacent Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.4
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Other

Remedy:

Refer to Nortel Technical Support Security Advisory Bulletin 2007008383 for patch, upgrade, or suggested workaround information. See References.

References:

  • COMPASS SECURITY ADVISORY: October, 18th 2007: IP Phone Surveillance Mode.
  • Nortel Technical Support Security Advisory Bulletin 2007008383: UNIStim IP Phone Remote Eavesdrop Potential Vulnerability.
  • BID-26120: Nortel Networks Multiple UNIStim VoIP Products Remote Eavesdrop Vulnerability
  • CVE-2007-5637: 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 allow remote attackers to eavesdrop on the physical environment via an Open Audio Stream message that enables surveillance mode. NOTE: issues relating to a small ID number space can be leveraged to make this attack easier.
  • SA27234: Nortel Products Multiple Vulnerabilities

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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