Full Disclosure: Re: Linux kernel source archive vulnerable

From: Troy Cregger <tcregger_at_kennedyinfo.com>
Date: Thu, 07 Sep 2006 17:04:39 -0400

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kernel-2.6.17-gentoo-r7 seems OK.

$ find /usr/src/linux-2.6.17-gentoo-r7/ -perm -666 ! -type l | wc -l
0
$

Hadmut Danisch wrote:
> On Fri, Sep 08, 2006 at 12:52:22AM +0530, Raj Mathur wrote:
>> I wouldn't know if something has changed drastically between 2.6.16
>> and 2.6.17.11, but:
>>
>> raju_at_mail:~$ find /usr/src/linux-2.6.16/ -perm -666 ! -type l
>> raju_at_mail:~$
>>
>> Not a single world-writable file or directory. Perhaps pre-release
>> kernel tarballs are more lax?
>
>
> On my machine (I also have a 2.6.16):
>
> # find /usr/src/linux-2.6.16/ -perm -666 ! -type l | wc -l
> 20434
>
>
>
>
> Just to doublecheck I wrote a script which parses the kernel tar:
>
> pax_global_header 52 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/ 0 b mode=777 uid= 0 gid= 0
> linux-2.6.17.11/.gitignore 462 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/COPYING 18693 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/CREDITS 89536 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/ 0 b mode=777 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/00-INDEX 10581 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/BUG-HUNTING 7249 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/Changes 11655 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/CodingStyle 17843 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/DMA-API.txt 21291 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/DMA-ISA-LPC.txt 5332 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/DMA-mapping.txt 32801 b mode=666 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/DocBook/ 0 b mode=777 uid= 0 gid= 0
> linux-2.6.17.11/Documentation/DocBook/.gitignore 35 b mode=666 uid= 0 gid= 0
> ...
>
>
> A friend of mine confirmed to also have world writable dirs and files.
>
> regards
> Hadmut
>
> _______________________________________________
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- --
Troy Cregger
Lead Developer, Technical Products.
Kennedy Information, Inc
One Phoenix Mill Ln, Fl 3
Peterborough, NH 03458
(603)924-0900 ext 662
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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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Received on Sep 07 2006