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Category:   Application (Generic)  >   PHP Vendors:   PHP Group
PHP Buffer Overflow in explode() Function May Let Users Bypass Safe Mode Restrictions
SecurityTracker Alert ID:  1020995
SecurityTracker URL:
CVE Reference:   CVE-2008-3659   (Links to External Site)
Date:  Oct 7 2008
Impact:   Execution of arbitrary code via local system, Execution of arbitrary code via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.4.x prior to 4.4.9; 5.6 - 5.2.6
Description:   A vulnerability was reported in PHP. A user may be able to bypass safe mode restrictions.

A user can set a specially crafted delimiter to trigger a buffer overflow in the explode function and potentially execute arbitrary code on the target system.

A local user can exploit this to bypass safe_mode restrictions.

[Editor's note: This vulnerability was original corrected by the vendor in August 2008.]

Impact:   A user may be able to bypass safe mode restrictions.
Solution:   The vendor has issued a fix (4.4.9). A source code fix for 5.2.x is available.
Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.

 Source Message Contents

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