Re: CVE 2019-13224 (UAF in PHP and Ruby regex lib)

                							

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<h1 class="m-title">Re: CVE 2019-13224 (UAF in PHP and Ruby regex lib)</h1>
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<em>From</em>: Marcin Kozlowski &lt;marcinguy () gmail com&gt;


<em>Date</em>: Mon, 9 Sep 2019 20:12:33 +0200


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<pre style="margin: 0em;">Hi list,

Read about potential UAF in PHP and Ruby via regex library "oniguruma" (for
example here:
<a rel="nofollow" href="https://thehackernews.com/2019/09/php-programming-language.html">https://thehackernews.com/2019/09/php-programming-language.html</a>)

However, I didn't find default PHP and Ruby vulnerable:

<a rel="nofollow" href="https://github.com/kkos/oniguruma/issues/153">https://github.com/kkos/oniguruma/issues/153</a>

My investigation showed the onig_new_deluxe() is not used by default.
However, modified PHP to use it and fuzzed it and was able to reproduce UAF
in 7 mins :)

Write me if I am wrong. Would like to investigate this great bug.

Thanks,
Marcin

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<h3 class="m-thread">Current thread:</h3>
<ul class="thread">
<li><strong>Re: CVE 2019-13224 (UAF in PHP and Ruby regex lib)</strong> <em>Marcin Kozlowski (Sep 09)</em>
</li></ul>


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