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Insecure Library Loading
Not critical

PHP "curl_init()" Safe Mode Bypass Weakness

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Release Date:  2006-05-30    Last Update:  2006-08-18    Views:  19,052

Secunia Advisory SA20337

Where:

Local system

Impact:

Security Bypass

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Maksymilian Arciemowicz has discovered a weakness in PHP, which can be exploited by malicious, local users to bypass certain security restrictions.

The weakness is caused due to an error in the handling of null byte characters in the "curl_init()" PHP function in the curl extension. This can be exploited to bypass the safe mode protection and access other users' files located in the same directory as the running script.

Successful exploitation requires that the curl extension is installed and enabled.

The weakness has been confirmed in versions 5.0.5 and 5.1.4, and has also been reported in version 4.4.2. Other versions may also be affected.


Solution:
PHP 4.4.x:

Further details available to Secunia VIM customers

Provided and/or discovered by:
Maksymilian Arciemowicz

Original Advisory:
http://securityreason.com/achievement_securityalert/39

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: PHP "curl_init()" Safe Mode Bypass Weakness

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