34767 : PHP php_sprintf_appendstring Function 64 Bit Casting Memory Corruption
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Info

Last Modified
4 months ago

Percent Complete
90%

Disclosure
Mar 30, 2007

Discovery
Unknown

Dates

Exploit
Unknown

Solution
Unknown

Description

 PHP contains a flaw that may allow a context-dependent attacker to gain elevated privileges. The issue is due to an integer signedness error in the printf function family as used on 64 bit machines. When a width and precision of -1 is passed to the php_sprintf_appendstring function, it may place an internal buffer at an arbitrary memory location. This may allow an attacker to execute arbitrary code.

Classification

 Location: Local Access Required, Remote/Network Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Solution

 Upgrade to version 5.2.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products
The PHP Group
Watch-list
PHP
Watch-list
 5.2.0
4.4.4

References

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