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Date: Sun, 13 Mar 2011 23:27:29 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: Felipe Pena <felipensp@...il.com>
Subject: Re: CVE request: PHP substr_replace() use-after-free

On 03/13/2011 10:00 PM, Felipe Pena wrote:
> Hi,
>
> I just found an use-after-free in PHP's substr_replace() function caused by
> passing the same variable multiple times to the function, which makes the
> PHP to use the same pointer in three variables inside the function, so when
> the pointer is changed by a type conversion inside the function, it invalids
> the other variables.
>
> The PHP security team has seen noticed, and a bug already was filed in the
> bugtracker (http://bugs.php.net/bug.php?id=54238 [private])
>
> $ sapi/cli/php ../bug.php
> array(1) {
> [0]=>
> string(5) "0Ȅ y"
> }
> array(1) {
> [0]=>
> string(1) "0"
> }

Please use CVE-2011-1148.

-- 
main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); }

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