CVE-2020-3416— Cisco IOS XE Software for Cisco ASR 900 Series Route Switch Processor 3 Arbitrary Code Execution Vulnerabilities

Cisco IOS XE Software for Cisco ASR 900 Series Route Switch Processor 3 Arbitrary Code Execution Vulnerabilities

Multiple vulnerabilities in the initialization routines that are executed during bootup of Cisco IOS XE Software for Cisco ASR 900 Series Aggregation Services Routers with a Route Switch Processor 3 (RSP3) installed could allow an authenticated, local attacker with high privileges to execute persistent code at bootup and break the chain of trust. These vulnerabilities are due to incorrect validations by boot scripts when specific ROM monitor (ROMMON) variables are set. An attacker could exploit these vulnerabilities by copying a specific file to the local file system of an affected device and defining specific ROMMON variables. A successful exploit could allow the attacker to run arbitrary code on the underlying operating system (OS) with root privileges. To exploit these vulnerabilities, an attacker would need to have access to the root shell on the device or have physical access to the device.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

暴露危险的方法或函数

Cisco ASR 900 Series Aggregation Services Routers 代码注入漏洞

Cisco ASR 900 Series是美国思科（Cisco）公司的一款900系列聚合服务路由器。 Cisco ASR 900 Series Route Switch Processor 3 (RSP3) 存在安全漏洞，这些漏洞源于设置了特定的ROM监视器（ROMMON）变量时启动脚本对验证的不正确所致。攻击者可利用该漏洞能够以root特权在底层操作系统（OS）上运行任意代码。

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