phpMyAdmin remote PHP code injection vulnerability_PHP tutorial
Involved programs:
phpMyAdmin
Description:
phpMyAdmin remote PHP code injection vulnerability
Details:
phpMyAdmin is a free tool that provides a WWW management interface for managing MySQL.
phpMyAdmin has a PHP code injection problem. Remote attackers can use this eval() function to execute arbitrary PHP commands.
However, this vulnerability only works when the $cfg[‘LeftFrameLight‘] variable (config.inc.php file) is set to FALSE.
phpMyAdmin stores multiple server configurations in the ($cfg['Servers'][$i]) array variable. These configurations are included in the config.inc.php file. The information includes host, port, user, password, and verification. Type, etc., but since $cfg['Servers'][$i] has not been initialized, remote users are allowed to add server configuration through the GET function, such as submitting the following request to add configuration:
http://target/phpMyAdmin-2.5 .7/left.php?server=4&cfg[Servers][host]=202.81.x.x&cfg[Servers][port]=8888&cfg[Servers][user]=alice ..
And The $eval_string string in the eval() function allows the execution of PHP code. An attacker can increase the server configuration and submit a specially constructed table name, which can cause the contained malicious PHP code to be executed.
Affected systems:
phpMyAdmin phpMyAdmin 2.5.7
Attack method:
No effective attack code yet
Solution:
Current manufacturer No patches or upgrades have been provided yet. We recommend that users of this software always pay attention to the manufacturer's homepage to obtain the latest version:
http://www.phpmyadmin.net

Thedifferencebetweenunset()andsession_destroy()isthatunset()clearsspecificsessionvariableswhilekeepingthesessionactive,whereassession_destroy()terminatestheentiresession.1)Useunset()toremovespecificsessionvariableswithoutaffectingthesession'soveralls

Stickysessionsensureuserrequestsareroutedtothesameserverforsessiondataconsistency.1)SessionIdentificationassignsuserstoserversusingcookiesorURLmodifications.2)ConsistentRoutingdirectssubsequentrequeststothesameserver.3)LoadBalancingdistributesnewuser

PHPoffersvarioussessionsavehandlers:1)Files:Default,simplebutmaybottleneckonhigh-trafficsites.2)Memcached:High-performance,idealforspeed-criticalapplications.3)Redis:SimilartoMemcached,withaddedpersistence.4)Databases:Offerscontrol,usefulforintegrati

Session in PHP is a mechanism for saving user data on the server side to maintain state between multiple requests. Specifically, 1) the session is started by the session_start() function, and data is stored and read through the $_SESSION super global array; 2) the session data is stored in the server's temporary files by default, but can be optimized through database or memory storage; 3) the session can be used to realize user login status tracking and shopping cart management functions; 4) Pay attention to the secure transmission and performance optimization of the session to ensure the security and efficiency of the application.

PHPsessionsstartwithsession_start(),whichgeneratesauniqueIDandcreatesaserverfile;theypersistacrossrequestsandcanbemanuallyendedwithsession_destroy().1)Sessionsbeginwhensession_start()iscalled,creatingauniqueIDandserverfile.2)Theycontinueasdataisloade

Absolute session timeout starts at the time of session creation, while an idle session timeout starts at the time of user's no operation. Absolute session timeout is suitable for scenarios where strict control of the session life cycle is required, such as financial applications; idle session timeout is suitable for applications that want users to keep their session active for a long time, such as social media.

The server session failure can be solved through the following steps: 1. Check the server configuration to ensure that the session is set correctly. 2. Verify client cookies, confirm that the browser supports it and send it correctly. 3. Check session storage services, such as Redis, to ensure that they are running normally. 4. Review the application code to ensure the correct session logic. Through these steps, conversation problems can be effectively diagnosed and repaired and user experience can be improved.

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.


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

SublimeText3 Linux new version
SublimeText3 Linux latest version

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

SublimeText3 Chinese version
Chinese version, very easy to use

Dreamweaver Mac version
Visual web development tools

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
