安全公告/【CVE-2022-28736】

基本信息

漏洞描述

There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.

修复方式

sudo apt update && sudo apt dist-upgrade

漏洞判定

执行命令apt policy PackageName获取软件包版本号，版本小于修复版本，则受此漏洞影响，版本大于等于修复版本，则此漏洞已修复

参考

https://security-tracker.debian.org/tracker/CVE-2022-28736
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28736
https://nvd.nist.gov/vuln/detail/CVE-2022-28736