A vulnerability has been identified in Asterisk, which could be exploited by remote attackers to cause a denial of service. This issue is caused due to insufficent verification of ACK responses during IAX2 handshakes, which could be exploited by remote unauthenticated attackers to cause a vulnerable application to send early audio data to arbitrary addresses, creating a denial of service condition.
Credits
Vulnerability reported by Joel R. Voss (Javantea).
ChangeLog
2008-04-23 : Initial release
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