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Date: Tue, 20 Sep 2016 09:29:55 +0100
From: John Haxby <>
Cc: Jan Schaumann <>,
        "chet.ramey" <>
Subject: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME

> On 19 Sep 2016, at 19:32, Seth Arnold <> wrote:
> On Sun, Sep 18, 2016 at 08:06:57PM +0100, John Haxby wrote:
>>>>> A little while ago, one of our users discovered that by setting the
>>>>> hostname to $(something unpleasant), bash would run "something
>>>>> unpleasant" when it expanded \h in the prompt string.
>>> This issue has been public since October, 2015 in Ubuntu's bug tracking
>>> system.
>> Yes, the message was more to let people know that CVE-2016-0634  had
>> been assigned for this issue.   Do you have a link to the Ubuntu issue
>> and a different CVE number?
> Hello John; we did not assign a CVE number for this issue.
> Bernd Dietzel reported it at:

Thanks.   CVE-2016-0634 can stand then.

[The internal process we follow for acquiring CVEs is heavily oriented towards closed source so my apologies for not bringing this forward sooner.]


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