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Message-ID: <56C649A7.7080105@gmail.com>
Date: Thu, 18 Feb 2016 16:45:59 -0600
From: Austin English <austinenglish@...il.com>
To: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: Re: CVE request for wget
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On 12/24/2015 12:05 PM, Austin English wrote:
> On Tue, Nov 3, 2015 at 10:19 PM, Austin English
> <austinenglish@...il.com> wrote:
>> And 1.7 is now out as well:
>> https://tails.boum.org/news/version_1.7/index.en.html
>>
>> With the fix included and documented
>>
>> On Mon, Nov 2, 2015 at 2:37 AM, Austin English
>> <austinenglish@...il.com> wrote:
>>>
>>> The fix has been released in 1.7-rc1,
>>> https://tails.boum.org/news/test_1.7-rc1/index.en.html
>>>
>>> On Mon, Oct 26, 2015 at 3:21 PM, Austin English
>>> <austinenglish@...il.com> wrote:
>>>>
>>>> On Thu, Oct 1, 2015 at 6:10 PM, Seth Arnold
>>>> <seth.arnold@...onical.com> wrote:
>>>>> On Thu, Oct 01, 2015 at 06:57:26PM -0400,
>>>>> cve-assign@...re.org wrote:
>>>>>> If there is any additional Tails vulnerability related to
>>>>>> this, another CVE ID may be needed. For example,
>>>>>>
>>>>>> https://lists.gnu.org/archive/html/bug-wget/2015-08/msg00050.html
>>>>>>
>>>>>>
>>>>>>
says
>>>>>>
>>>>>> to be 100% sure, you should add --passive-ftp to your
>>>>>> command line. If you don't do that, your /etc/wgetrc or
>>>>>> ~/.wgetrc could include --no-passive-ftp (or passiveftp =
>>>>>> off).
>>>>>>
>>>>>> If Tails is supposed to try to ensure that, perhaps
>>>>>> there's a requirement to have something like:
>>>>>>
>>>>>> alias wget="wget --passive-ftp"
>>>>>>
>>>>>> in a system-wide location (possibly /etc/bash.bashrc).
>>>>>> The concept of CVE IDs for "failure of a torify step"
>>>>>> issues is new, and we aren't sure of the best approach.
>>>>>
>>>>> I suspect using a bash alias in a site-wide config might
>>>>> then qualify for another CVE in the future, along the lines
>>>>> of "programs that spawn wget via system(3), popen(3), or
>>>>> exec family of functions can use unsafe active mode by
>>>>> accident". If Tails is in the business of fixing these
>>>>> things for safety, removing active ftp support from tools
>>>>> seems like better fix.
>>>>>
>>>>> Thanks
>>>>
>>>> A fix has been applied to Tails git:
>>>>
>>>> https://labs.riseup.net/code/projects/tails/repository/revisions/b9
fd6312435d55dd0bc0b6abdb7994da4d66e2b2
>>>>
>>>>
>>>>
In short, the wget binary is moved to /usr/lib/wget/wget, and a
>>>> wrapper script is put in place in /usr/bin/wget. The wrapper
>>>> ensures that wget is called via torsocks, and additionally,
>>>> also forces --passive-ftp.
>>>>
>>>> Moving wget to /usr/lib/wget/wget gets the potentially
>>>> dangerous wget binary out of $PATH. A dedicated attacker
>>>> could check if /usr/bin/wget is a script and then parse it to
>>>> find the actual binary, but that would need to be a very
>>>> dedicated attacker and at that point, there are more feasible
>>>> attacks available.
>
> This CVE has been fixed in a released version for quite some time,
> what is needed to get this published/resolved?
Ping.
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