lkml.org 
[lkml]   [2007]   [Sep]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Chroot bug
Jan Engelhardt wrote:
> On Sep 26 2007 01:11, David Newall wrote:
>
>> Jan Engelhardt wrote:
>>
>>> On Sep 26 2007 00:40, David Newall wrote:
>>>
>>>
>>>> Miloslav Semler pointed out that a root process can chdir("..") out of its
>>>> chroot.
>>>>
>>> So what? Just do this: chdir into the root after chroot.
>>>
>> I don't think so. His exploit just got me all the way out of a chroot within a
>> chroot within a chroot, inclusive of lots of chdirs.
>>
>
> Close all fds that point to directories outside the root ;-)
>

Nope, still gets out.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-09-25 22:55    [W:0.102 / U:0.152 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site