安全公告/【CVE-2021-3697】

基本信息

漏洞名称:
受影响操作系统:Asianux
危险等级:高危
影响源码包:grub2
CVSS评分:7
发现日期:2022-10-29
修复版本:2.04.27-18

漏洞描述

A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

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

补丁

参考

https://security-tracker.debian.org/tracker/CVE-2021-3697
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3697
https://nvd.nist.gov/vuln/detail/CVE-2021-3697