Cisco Unity insecure default configuration allows international operator calls using call forwarding

cisco-unity-insecure-configuration (10282) The risk level is classified as LowLow Risk


Cisco Unity could allow a local or remote attacker to make unauthorized calls, caused by an insecure default configuration in the predefined restriction tables. A local or remote attacker could exploit this vulnerability by setting their own Cisco Unity mailboxes to forward calls or log into the default Example Administrator or Example Subscriber account and set the mailboxes to forward calls to international or other restricted numbers.


Bypass Security


Refer to Cisco Security Advisory: Predefined Restriction Tables Allow Calls to International Operator for workaround information. See References.


  • Cisco Systems Inc. Security Advisory, 2002 October 04 15:30 GMT: Predefined Restriction Tables Allow Calls to International Operator.
  • BID-5896: Cisco Unity Default Restrictions International Operator Call Forwarding Vulnerability
  • CVE-2002-1189: The default configuration of Cisco Unity 2.x and 3.x does not block international operator calls in the predefined restriction tables, which could allow authenticated users to place international calls using call forwarding.
  • OSVDB ID: 8872: Cisco Unity Call Forwarding International Call Restriction Bypass

Platforms Affected:

  • Cisco Unity Server 2.0
  • Cisco Unity Server 2.1
  • Cisco Unity Server 2.2
  • Cisco Unity Server 2.3
  • Cisco Unity Server 2.4
  • Cisco Unity Server 2.46
  • Cisco Unity Server 3.0
  • Cisco Unity Server 3.1


Oct 04, 2002

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