Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Asterisk IAX2隧道驱动拒绝服务攻击漏洞
Vulnerability Description
Asterisk是开放源码的软件PBX，支持各种VoIP协议和设备。 如果配置为允许未经认证的呼叫的话，IAX2隧道驱动中存在拒绝服务漏洞。攻击者可以向服务器的有效扩展发送大量NEW报文以非认证用户的身份初始化呼叫，这会导致将Asterisk系统上的资源分配出去；此外IAX2隧道驱动还会一直试图重新调度每个伪造呼叫的中继，导致很快耗尽系统资源，必须重启Asterisk才能恢复正常运行。
CVSS Information
N/A
Vulnerability Type
N/A