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

TodropaviewinMySQL,use"DROPVIEWIFEXISTSview_name;"andtomodifyaview,use"CREATEORREPLACEVIEWview_nameASSELECT...".Whendroppingaview,considerdependenciesanduse"SHOWCREATEVIEWview_name;"tounderstanditsstructure.Whenmodifying

MySQLViewscaneffectivelyutilizedesignpatternslikeAdapter,Decorator,Factory,andObserver.1)AdapterPatternadaptsdatafromdifferenttablesintoaunifiedview.2)DecoratorPatternenhancesdatawithcalculatedfields.3)FactoryPatterncreatesviewsthatproducedifferentda

ViewsinMySQLarebeneficialforsimplifyingcomplexqueries,enhancingsecurity,ensuringdataconsistency,andoptimizingperformance.1)Theysimplifycomplexqueriesbyencapsulatingthemintoreusableviews.2)Viewsenhancesecuritybycontrollingdataaccess.3)Theyensuredataco

TocreateasimpleviewinMySQL,usetheCREATEVIEWstatement.1)DefinetheviewwithCREATEVIEWview_nameAS.2)SpecifytheSELECTstatementtoretrievedesireddata.3)Usetheviewlikeatableforqueries.Viewssimplifydataaccessandenhancesecurity,butconsiderperformance,updatabil

TocreateusersinMySQL,usetheCREATEUSERstatement.1)Foralocaluser:CREATEUSER'localuser'@'localhost'IDENTIFIEDBY'securepassword';2)Foraremoteuser:CREATEUSER'remoteuser'@'%'IDENTIFIEDBY'strongpassword';3)Forauserwithaspecifichost:CREATEUSER'specificuser'@

MySQLviewshavelimitations:1)Theydon'tsupportallSQLoperations,restrictingdatamanipulationthroughviewswithjoinsorsubqueries.2)Theycanimpactperformance,especiallywithcomplexqueriesorlargedatasets.3)Viewsdon'tstoredata,potentiallyleadingtooutdatedinforma

ProperusermanagementinMySQLiscrucialforenhancingsecurityandensuringefficientdatabaseoperation.1)UseCREATEUSERtoaddusers,specifyingconnectionsourcewith@'localhost'or@'%'.2)GrantspecificprivilegeswithGRANT,usingleastprivilegeprincipletominimizerisks.3)

MySQLdoesn'timposeahardlimitontriggers,butpracticalfactorsdeterminetheireffectiveuse:1)Serverconfigurationimpactstriggermanagement;2)Complextriggersincreasesystemload;3)Largertablesslowtriggerperformance;4)Highconcurrencycancausetriggercontention;5)M


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 English version
Recommended: Win version, supports code prompts!

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Dreamweaver CS6
Visual web development tools
