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PHP Trailing Slash "open_basedir" Security Bypass
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Secunia Advisory:
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SA16971
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Release Date:
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2005-09-27
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Last Update:
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2005-11-28
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Popularity:
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16,477 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 5.0.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
thorben has discovered a security issue in PHP, which can be exploited by malicious, local users to access certain files outside the "open_basedir" root.
The security issue is caused due to fopen wrappers not correctly obeying the "open_basedir" directive, which is designed to restrict PHP scripts in certain environments from accessing files outside the defined prefix. This can be exploited to access files in directories outside the "open_basedir" root as if a trailing slash on the "open_basedir" value is not taken into account.
Example:
Files in the "/user/test11/" directory can be accessed with the "open_basedir" root set to "/user/test1/", but not files in the "/user/test2/" directory.
The security issue has been confirmed in version 4.4.0 and 5.0.5. Other versions may also be affected.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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