Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability

A vulnerability in the secure boot process of Cisco FXOS Software could allow an authenticated, local attacker to bypass the secure boot mechanisms. The vulnerability is due to insufficient protections of the secure boot process. An attacker could exploit this vulnerability by injecting code into a specific file that is then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device which would be executed at each boot and maintain persistence across reboots.

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保护机制失效

Cisco FXOS Software 安全漏洞

Cisco FXOS Software是美国思科（Cisco）公司的一套运行在思科安全设备中的防火墙软件。 Cisco FXOS 存在安全漏洞，该漏洞源于安全引导过程的保护不够。攻击者可利用该漏洞可以利用这个漏洞，将代码注入到特定的文件中，然后在设备引导过程中引用该文件。攻击者可利用该漏洞破坏信任链，并将代码注入设备的引导过程中，该过程将在每次引导时执行，并在重新引导时保持持久性。

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