<s>
DirtyTooth	B-General_Concept
is	O
a	O
generic	O
term	O
for	O
a	O
feature	O
in	O
the	O
Bluetooth	B-General_Concept
profiles	I-General_Concept
of	O
an	O
iPhone	B-Operating_System
that	O
may	O
be	O
exploited	O
if	O
the	O
device	O
is	O
using	O
an	O
iOS	B-Application
version	O
below	O
11.2	O
.	O
</s>
<s>
Android	B-Application
devices	O
are	O
not	O
affected	O
.	O
</s>
<s>
A	O
research	O
paper	O
was	O
published	O
in	O
2017	O
using	O
DirtyTooth	B-General_Concept
with	O
a	O
real	O
bluetooth	O
speaker	O
.	O
</s>
<s>
In	O
BlackHat	O
Europe	O
2017	O
another	O
demonstration	O
was	O
carried	O
out	O
,	O
this	O
time	O
with	O
a	O
Raspberry	B-Operating_System
Pi	I-Operating_System
.	O
</s>
<s>
DirtyTooth	B-General_Concept
is	O
based	O
on	O
the	O
way	O
how	O
Bluetooth	O
notifies	O
the	O
user	O
when	O
it	O
changes	O
the	O
profile	O
.	O
</s>
<s>
Some	O
operating	B-General_Concept
systems	I-General_Concept
ask	O
the	O
user	O
to	O
accept	O
the	O
profile	O
change	O
but	O
others	O
like	O
iOS	B-Application
,	O
do	O
not	O
warn	O
the	O
user	O
,	O
changing	O
automatically	O
from	O
one	O
profile	O
to	O
another	O
.	O
</s>
<s>
Depending	O
on	O
the	O
Bluetooth	B-General_Concept
profile	I-General_Concept
,	O
it	O
can	O
provide	O
different	O
access	O
levels	O
to	O
the	O
services	O
and	O
the	O
information	O
located	O
in	O
the	O
device	O
.	O
</s>
<s>
The	O
DirtyTooth	B-General_Concept
hack	O
works	O
impersonating	O
the	O
A2DP	O
profile	O
so	O
that	O
a	O
user	O
's	O
iOS	B-Application
device	O
connects	O
,	O
changing	O
to	O
a	O
PBAP	O
profile	O
after	O
pairing	B-Protocol
without	O
having	O
to	O
enter	O
a	O
PIN	O
if	O
the	O
device	O
has	O
Bluetooth	O
version	O
2.1	O
or	O
higher	O
.	O
</s>
<s>
The	O
hack	O
affected	O
every	O
iPhone	B-Operating_System
from	O
the	O
3G	B-Operating_System
to	O
the	O
X	B-Operating_System
,	O
given	O
that	O
the	O
smartphones	O
were	O
running	O
any	O
operating	B-General_Concept
system	I-General_Concept
below	O
iOS	B-Application
version	O
11.2	O
.	O
</s>
<s>
The	O
data	O
obtained	O
exploiting	O
the	O
DirtyTooth	B-General_Concept
hack	O
may	O
include	O
personal	O
and	O
technical	O
information	O
about	O
the	O
user	O
and	O
the	O
device	O
.	O
</s>
<s>
This	O
hack	O
is	O
resolved	O
by	O
updating	O
the	O
iPhone	B-Operating_System
to	O
iOS	B-Application
version	O
11.2	O
or	O
higher	O
.	O
</s>
