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Re: [Full-disclosure] Linux kernel source archive vulnerable
- To: Raj Mathur <raju@xxxxxxxxxxxxxxx>
- Subject: Re: [Full-disclosure] Linux kernel source archive vulnerable
- From: hadmut@xxxxxxxxxx (Hadmut Danisch)
- Date: Thu, 7 Sep 2006 22:01:10 +0200
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@mail:~$ find /usr/src/linux-2.6.16/ -perm -666 ! -type l
> raju@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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