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Message-ID: <CAJ_zFk+7eV52Ui1+aV+BKhc68zKi3pmPsgPmFoOsw8Qg6dHPAQ@mail.gmail.com>
Date: Tue, 14 Apr 2015 14:08:07 -0700
From: Tavis Ormandy <taviso@...gle.com>
To: oss-security@...ts.openwall.com
Cc: Assign a CVE Identifier <cve-assign@...re.org>
Subject: Re: Re: Problems in automatic crash analysis frameworks
On Tue, Apr 14, 2015 at 1:35 PM, Tavis Ormandy <taviso@...gle.com> wrote:
> On Tue, Apr 14, 2015 at 9:02 AM, Marc Deslauriers
> <marc.deslauriers@...onical.com> wrote:
>> Hi,
>>
>> On 2015-04-14 11:55 AM, cve-assign@...re.org wrote:
>>> This is mostly a question for the persons who assigned CVE-2015-1318
>>> and CVE-2015-1862. Should these CVE assignments be interpreted to
>>> mean:
>>>
>>> CVE-2015-1318 - in Apport, an unprivileged user can use a
>>> namespace-based attack because there is an execve by
>>> root after a chroot into a user-specified directory
>>
>> Yes, I assigned CVE-2015-1318 to that specific issue in Apport.
>>
>> Marc.
>
> It looks like this is the patch for Apport:
>
> http://bazaar.launchpad.net/~apport-hackers/apport/trunk/revision/2943#data/apport
>
> It's far more complicated than I expected, and not obviously correct.
> It could probably use some review, I'll think about it today.
>
> Tavis.
Wait, my first thought is that it's not obvious to me that
/proc/net/unix is guaranteed to be newline delimited, newline is a
perfectly valid name in a filename, no?
>>> import socket
>>> socket.socket(socket.AF_UNIX, socket.SOCK_STREAM).bind('test\ntest')
>>> sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
>>> sock.bind('/tmp/foo\nbar')
>>> sock.listen(1)
$ grep -A1 foo /proc/net/unix
0000000000000000: 00000002 00000000 00010000 0001 01 4772228 /tmp/foo
bar
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