安全公告/【CVE-2020-28049】

基本信息

漏洞名称:
受影响操作系统:桌面操作系统
危险等级:中危
影响源码包:sddm
CVSS评分:6.3
发现日期:2021-12-19
修复版本:0.18.0-1+deb10u1

漏洞描述

An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.

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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28049
https://nvd.nist.gov/vuln/detail/CVE-2020-28049