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Bug #11570 Security Hole on ChDir()
Submitted: 2001-06-20 00:22 UTC Modified: 2001-06-20 10:46 UTC
From: wangshui at nyist dot net Assigned:
Status: Closed Package: Directory function related
PHP Version: 4.0.4pl1 OS: Linux
Private report: No CVE-ID: None
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From: wangshui at nyist dot net
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 [2001-06-20 00:22 UTC] wangshui at nyist dot net
ChDir() can be use to enter a directory which belongs to others. Hackers can use this hole to break the SafeMode and OpenBaseDir restriction and enter and view and even open files in someone else' directory.
In a multiuser environment where users must have some files with the same owner( such as 'nobody', to handle file-upload tasks), this hole is extremely dangerous.

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 [2001-06-20 10:46 UTC] rasmus@php.net
Fixed in CVS
 
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