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PHP "error_log()" Safe Mode Bypass Weakness
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Secunia Advisory:
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SA20818
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Release Date:
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2006-06-26
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Last Update:
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2006-08-18
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Critical:
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Not critical
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Impact:
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Security Bypass
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| Software: | PHP 4.4.x
PHP 5.1.x
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| | CVE reference: | CVE-2006-3011 (Secunia mirror)
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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 input validation error in the "error_log()" PHP function in the processing of the destination parameter. This can be exploited to bypass the safe mode protection via directory traversal attacks in the "php://" wrapper.
The weakness has been confirmed in version 5.1.4 and has also been reported in version 4.4.2. Other versions may also be affected.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.
Solution:
Update to version 4.4.3 or 5.1.5.
http://www.php.net/downloads.php
Provided and/or discovered by:
Maksymilian Arciemowicz
Changelog:
2006-07-13: Updated "Solution" section.
2006-08-03: Updated "Solution" section.
2006-08-18: Updated "Solution" section.
Original Advisory:
http://securityreason.com/achievement_securityalert/41
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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