Cisco Firepower Threat Defense Software Generic Routing Encapsulation Tunnel IPv6 Denial of Service Vulnerability

A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory handling error when GRE over IPv6 traffic is processed. An attacker could exploit this vulnerability by sending crafted GRE over IPv6 packets with either IPv4 or IPv6 payload through an affected device. A successful exploit could allow the attacker to cause the device to crash, resulting in a DoS condition.

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双重释放

Cisco Firepower Threat Defense 资源管理错误漏洞

Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco FTD 6.3.0版本和6.4.0版本中存在资源管理错误漏洞，该漏洞源于在处理GRE over IPv6流量时出现内存处理错误。远程攻击者可借助带有IPv4或IPv6 payload的特制数据包利用该漏洞造成拒绝服务。

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资源管理错误