Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability

A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) protocol parser of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies. The vulnerability is due to improper parsing of specific attributes in a TLS packet header. An attacker could exploit this vulnerability by sending malicious TLS messages to the affected system. A successful exploit could allow the attacker to bypass the configured policies for the system, which could allow traffic to flow through without being inspected.

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保护机制失效

Cisco Firepower Threat Defense SSL/TLS协议解析器安全漏洞

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中的SSL/TLS协议解析器存在安全漏洞，该漏洞源于程序没有正确解析TLS数据包头中的属性。远程攻击者可通过发送恶意的TLS消息利用该漏洞绕过被配置的策略。

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