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Linux Kernel 4.6.2 (Ubuntu 16.04.1) - 'IP6T_SO_SET_REPLACE' Local Privilege Escalation
| Reporter | Title | Published | Views | Family All 276 |
|---|---|---|---|---|
 | Linux Kernel 4.6.3 Netfilter Privilege Escalation Vulnerability | 27 Sep 201600:00 | – | zdt |
| Linux kernel 4.6.2 - IP6T_SO_SET_REPLACE Privilege Escalation | 10 Oct 201600:00 | – | zdt |
| Linux Kernel 4.6.3 Netfilter Privilege Escalation Exploit | 24 Nov 201600:00 | – | zdt |
 | Security Bulletin: Vulnerabilities in the Linux kernel affect PowerKVM | 18 Jun 201801:34 | – | ibm |
 | Medium: kernel | 24 Jun 201600:00 | – | amazon |
 | Amazon Linux AMI : kernel (ALAS-2016-718) | 28 Jun 201600:00 | – | nessus |
| CentOS 7 : kernel (CESA-2016:1847) | 20 Sep 201600:00 | – | nessus |
| Debian DSA-3607-1 : linux - security update | 29 Jun 201600:00 | – | nessus |
| EulerOS 2.0 SP1 : kernel (EulerOS-SA-2016-1048) | 1 May 201700:00 | – | nessus |
| EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1494) | 15 May 201900:00 | – | nessus |
10
# Exploit Title: Linux kernel <= 4.6.2 - Local Privileges Escalation via IP6T_SO_SET_REPLACE compat setsockopt call
# Date: 2016.10.8
# Exploit Author: Qian Zhang@MarvelTeam Qihoo 360
# Version: Linux kernel <= 4.6.2
# Tested on: Ubuntu 16.04.1 LTS Linux 4.4.0-21-generic
# CVE: CVE-2016-4997
# Reference:http://www.openwall.com/lists/oss-security/2016/09/29/10
# Contact: [email protected]
#DESCRIPTION
#===========
#The IPv6 netfilter subsystem in the Linux kernel through 4.6.2 does not validate certain offset fields,
#which allows local users to escalade privileges via an IP6T_SO_SET_REPLACE compat setsockopt call with ip6_tables module loaded.
zhang_q@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE$ ls
compile.sh enjoy enjoy.c pwn pwn.c version.h
zhang_q@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE$ sudo modprobe ip6_tables
[sudo] password for zhang_q:
zhang_q@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE$ ./pwn
pwn begin, let the bullets fly . . .
and wait for a minute . . .
pwn over, let's enjoy!
preparing payload . . .
trigger modified tty_release . . .
got root, enjoy :)
root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE#
root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE# id
uid=0(root) gid=0(root) groups=0(root)
root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE# hostnamectl
Static hostname: ubuntu
Icon name: computer-vm
Chassis: vm
Machine ID: 355cdf4ce8a048288640c2aa933c018f
Virtualization: vmware
Operating System: Ubuntu 16.04.1 LTS
Kernel: Linux 4.4.0-21-generic
Architecture: x86-64
root@ubuntu:~/ipv6_IP6T_SO_SET_REPLACE#
Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/40489.zipData
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10 Oct 2016 00:00Current
8.2High risk
Vulners AI Score8.2
CVSS 27.2
CVSS 3.17.8
EPSS0.05493