Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution

When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.

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

未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)

GNU GRUB 安全漏洞

GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在安全漏洞，该漏洞源于udf模块包含一个grub_udf_read_block中的基于堆的缓冲区溢出问题，导致任意代码执行。

N/A

N/A