Cisco Security Advisory: Cisco TelePresence ISDN Gateway D-Channel Denial of Service Vulnerability

[Cisco Systems Product Security Incident Response Team <psirt () cisco com>]

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Cisco Security Advisory: Cisco TelePresence ISDN Gateway D-Channel Denial of Service Vulnerability

Advisory ID: cisco-sa-20140122-isdngw

Revision 1.0

For Public Release 2014 January 22 16:00  UTC (GMT)

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Summary
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Cisco TelePresence ISDN Gateway contains a vulnerability that could allow an unauthenticated, remote attacker to 
trigger the drop of the data channel (D-channel) causing all calls to be terminated and preventing users from making 
new calls.

Cisco has released free software updates that address this vulnerability. No workarounds that mitigate this 
vulnerability are available. This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140122-isdngw

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