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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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Popularity:
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10,730 views
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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
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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.
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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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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