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HomeDatabaseMysql TutorialMySQL COM_CHANGE_USER口令认证缺陷漏洞_MySQL

发布时间:2003-01-05
更新时间:2003-01-05
严重程度:高
威胁程度:控制应用程序系统
错误类型:设计错误
利用方式:服务器模式

BUGTRAQ ID:6373
CVE(CAN) ID:CAN-2002-1374

受影响系统

MySQL AB MySQL 3.22.26
MySQL AB MySQL 3.22.27
MySQL AB MySQL 3.22.28
MySQL AB MySQL 3.22.29
MySQL AB MySQL 3.22.30
MySQL AB MySQL 3.22.32
MySQL AB MySQL 3.23.2
MySQL AB MySQL 3.23.3
MySQL AB MySQL 3.23.4
MySQL AB MySQL 3.23.5
MySQL AB MySQL 3.23.8
MySQL AB MySQL 3.23.9
MySQL AB MySQL 3.23.10
MySQL AB MySQL 3.23.23
MySQL AB MySQL 3.23.24
MySQL AB MySQL 3.23.25
MySQL AB MySQL 3.23.26
MySQL AB MySQL 3.23.27
MySQL AB MySQL 3.23.28
MySQL AB MySQL 3.23.29
MySQL AB MySQL 3.23.30
MySQL AB MySQL 3.23.31
MySQL AB MySQL 3.23.34
MySQL AB MySQL 3.23.36
MySQL AB MySQL 3.23.37
MySQL AB MySQL 3.23.38
MySQL AB MySQL 3.23.39
MySQL AB MySQL 3.23.40
MySQL AB MySQL 3.23.41
MySQL AB MySQL 3.23.42
MySQL AB MySQL 3.23.43
MySQL AB MySQL 3.23.44
MySQL AB MySQL 3.23.45
MySQL AB MySQL 3.23.46
MySQL AB MySQL 3.23.47
MySQL AB MySQL 3.23.48
MySQL AB MySQL 3.23.49
MySQL AB MySQL 3.23.50
MySQL AB MySQL 3.23.51
MySQL AB MySQL 3.23.52
MySQL AB MySQL 3.23.53 a
MySQL AB MySQL 3.23.53
MySQL AB MySQL 4.0 .0
MySQL AB MySQL 4.0.1
MySQL AB MySQL 4.0.2
MySQL AB MySQL 4.0.3
MySQL AB MySQL 4.0.5 a

详细描述
MySQL 的口令认证机制存在漏洞,利用此漏洞一个经过认证的数据库用户可以劫持其他的数据库用户帐号。漏洞的原因在于当客户端发送COM_CHANGE_USER 命令后服务器使用客户端提交的一个串来比较进行口令认证。入侵者如果能猜到其他帐号口令的第一个字母就可能以那个帐号认证成功。口令的合法字符集是32个字符,也就是说恶意用户最多只要尝试32次就能攻击成功。

解决方案
厂商已经在最新版本的软件中解决了这个安全问题,请把服务器软件升级到3.23.54及其以后版本:

http://www.mysql.com

相关信息
Advisory 04/2002: Multiple MySQL vulnerabilities
http://archives.neohapsis.com/rchives/bugtraq/2002-12/0108.html

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