Critical Bluetooth Vulnerability in Android (CVE-2020-0022) – BlueFrag

                							

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<h1 class="m-title">Critical Bluetooth Vulnerability in Android (CVE-2020-0022) – BlueFrag</h1>
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<em>From</em>: Marcin Kozlowski &lt;marcinguy () gmail com&gt;


<em>Date</em>: Sat, 8 Feb 2020 10:10:54 +0100


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

You can read more here, if you didn't hear about it:

<a rel="nofollow" href="https://insinuator.net/2020/02/critical-bluetooth-vulnerability-in-android-cve-2020-0022/">https://insinuator.net/2020/02/critical-bluetooth-vulnerability-in-android-cve-2020-0022/</a>

Looking at the patch, when I understood it correctly, it seems all you need
to send fragmented GAP ACL L2CAP data over HCI:

<a rel="nofollow" href="https://android.googlesource.com/platform/system/bt/+/3cb7149d8fed2d7d77ceaa95bf845224c4db3baf">https://android.googlesource.com/platform/system/bt/+/3cb7149d8fed2d7d77ceaa95bf845224c4db3baf</a>

Anybody can confirm/deny? Anybody had success on doing it?

Starting to work on PoC/Demo to crate such a packets:

<a rel="nofollow" href="https://stackoverflow.com/questions/60116790/sending-gap-acl-l2cap-data-packets">https://stackoverflow.com/questions/60116790/sending-gap-acl-l2cap-data-packets</a>

Don't have a debugable device now though ...

For me crashing would be enough.

If anybody want to help on this, feel free to contact me directly or via
the list/SO.

Thanks,

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<h3 class="m-thread">Current thread:</h3>
<ul class="thread">
<li><strong>Critical Bluetooth Vulnerability in Android (CVE-2020-0022) – BlueFrag</strong> <em>Marcin Kozlowski (Feb 11)</em>
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<li><a name="10" href="10">Re: [FD]	Critical Bluetooth Vulnerability in Android (CVE-2020-0022) – BlueFrag</a> <em>Marcin Kozlowski (Feb 14)</em>
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