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A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

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grub2 缓冲区错误漏洞

grub2是美国GNU社区的一款Linux系统引导程序。 grub2 2.06之前版本中存在缓冲区错误漏洞。攻击者可利用该漏洞执行任意代码，影响数据机密性和完整性以及系统可用性。

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