A vulnerability has been identified in Ingate Firewall and SIParator, which could be exploited by remote attackers to cause a denial of service. This issue is caused by an error where SIP media ports are not reused when a call ended under certain conditions involving call hold and/or send-only streams, which could be exploited to exhaust the port pool, resulting in further calls being refused.
Credits
Vulnerability reported by the vendor.
ChangeLog
2008-01-11 : Initial release
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