PHP Code Injection Vulnerability in Yahoo

[florin_darck]

PHP Code Injection vulnerability

A Web application penetration tester, Ebrahim Hegazy, has discovered a critical remote PHP code injection vulnerability in the Yahoo website that could allowed hackers to inject and execute any php code on the Yahoo server.

The vulnerability exists in the Taiwan sub-domain of the Yahoo "

http://tw.user.mall.yahoo.com/rating/list?sid=[code_Injection]". The 'sid' parameter allows to inject PHP code.

According to his blog post, the sid parameter might have been directly passed to an eval() function that results in the code Injection.

In his demo, Ebrahim showed how he to get the directories list and process list by injecting the following code:

http://tw.user.mall.yahoo.com/rating/list?sid=${@print(system(“dir”))}

http://tw.user.mall.yahoo.com/rating/list?sid=${@print(system(“ps”))}

He also found out that Yahoo server is using an outdated kernel which is vulnerable to "Local Privilege escalation" vulnerability. Yahoo immediately fixed the issue after getting the notification from the researcher. However, he is still waiting for the Bug bounty reward for the bug. Google pays $20,000 for such kind of vulnerabilities. Yahoo sets the maximum bounty amount as "$15,000". Let us see how much bounty Yahoo offers for this vulnerability.

Source : E Hacking News [ EHN ] - The Latest IT Security News | Hacker News

[aelius]

Cyber Security Expert and Penetration tester, Ebrahim Hegazy has found a serious vulnerability in Yahoo's website that allows an attacker to remotely execute any commands on the server i.e. Remote Command Execution vulnerability.

According to Ebrahim blog post, the vulnerability resides in a Chinese subdomin of Yahoo website i.e. http://tw.user.mall.yahoo.com/rating/list?sid=$Vulnerability

Any remote user can manipulate the input to the sid parameter in the above URL, that passes the parameter value to an eval() PHP function on the server end.

If an attacker is able to inject a PHP code into this web application, it forces the server to execute it, but this method only limited by what PHP is capable of.

Read here: Yahoo! Remote Command Execution Vulnerability. | Security Down!

[SilenTx0]

Acelasi lucru la postat si florin_darck aici https://rstforums.com/forum/80558-php-code-injection-vulnerability-yahoo.rst

// Multumesc. Nu l-am observat. Am dat merge la thread.

Edited January 26, 2014 by aelius