CVE-2018-15397— Cisco Adaptive Security Appliance Software和Cisco Firepower Threat Defense Software 加密问题漏洞

Cisco Adaptive Security Appliance IPsec VPN Denial of Service Vulnerability

A vulnerability in the implementation of Traffic Flow Confidentiality (TFC) over IPsec functionality in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error that may occur if the affected software renegotiates the encryption key for an IPsec tunnel when certain TFC traffic is in flight. An attacker could exploit this vulnerability by sending a malicious stream of TFC traffic through an established IPsec tunnel on an affected device. A successful exploit could allow the attacker to cause a daemon process on the affected device to crash, which could cause the device to crash and result in a DoS condition.

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密钥管理错误

Cisco Adaptive Security Appliance Software和Cisco Firepower Threat Defense Software 加密问题漏洞

Cisco Adaptive Security Appliances（ASA，自适应安全设备）Software和Cisco Firepower Threat Defense（FTD）Software都是由美国思科（Cisco）公司开发的程序。前者是一套运行于防火墙中的操作系统。后者是一套提供下一代防火墙服务的统一软件。 Cisco ASA Software和Cisco FTD Software中的Traffic Flow Confidentiality (TFC) over IPsec功能的实现存在安全漏

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