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Re: [PATCH] BZ #15755: CVE-2013-2207: pt_chown tricked into granting access to another users pseudo-terminal
- From: "Carlos O'Donell" <carlos at redhat dot com>
- To: Markus Trippelsdorf <markus at trippelsdorf dot de>
- Cc: GNU C Library <libc-alpha at sourceware dot org>, David Miller <davem at davemloft dot net>, Roland McGrath <roland at hack dot frob dot com>, Andreas Schwab <schwab at suse dot de>, Andreas Jaeger <aj at suse dot com>, "Joseph S. Myers" <joseph at codesourcery dot com>, Ryan Arnold <rsa at us dot ibm dot com>, Alexandre Oliva <aoliva at redhat dot com>, Siddhesh Poyarekar <siddhesh at redhat dot com>
- Date: Thu, 25 Jul 2013 11:25:54 -0400
- Subject: Re: [PATCH] BZ #15755: CVE-2013-2207: pt_chown tricked into granting access to another users pseudo-terminal
- References: <51E8D4C1 dot 9000705 at redhat dot com> <20130725140700 dot GA355 at x4>
On 07/25/2013 10:07 AM, Markus Trippelsdorf wrote:
> On 2013.07.19 at 01:55 -0400, Carlos O'Donell wrote:
>> CVE-2013-2207: pt_chown tricked into granting access to another
>> users pseudo-terminal
>
> Just a heads up.
>
> This patch causes Konsole and tmux startup failures on my machine, e.g.:
> konsole(364)/kdecore (KPty/K3Process) KPty::open: Can't open a pseudo teletype
>
> To fix this issue I had to remount devpts with gid=5:
> mount -o remount,gid=5 /dev/pts/
>
> My original fstab had this entry:
> devpts /dev/pts devpts rw,relatime,mode=600 0 0
That is the expected behaviour. The GNU C Library 2.18 expects you
to have /dev/pts setup correctly.
Would an additional explanation in NEWS have helped?
I've added notes here:
http://sourceware.org/glibc/wiki/Release/2.18#Packaging_Changes
Cheers,
Carlos.