Re: [Full-disclosure] Linux kernel source archive vulnerable

[Christine Kronberg <suppressed>]

On Fri, 8 Sep 2006, Raj Mathur wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> > > > > > "Hadmut" == Hadmut Danisch <suppressed> writes:
>
>    Hadmut> [snip]
>
>    Hadmut> When unpacking such an archive, tar also sets the uid,
>    Hadmut> gid, and file permissions given in the tar
>    Hadmut> archive. Unfortunately, plenty of files and directories in
>    Hadmut> that archive are world writable. E.g. in the 2.6.17.11
>    Hadmut> archive, there are 1201 world writable directories and
>    Hadmut> 19554 world writable files.
>
> I wouldn't know if something has changed drastically between 2.6.16
> and 2.6.17.11, but:
>
> suppressed:~$ find /usr/src/linux-2.6.16/ -perm -666 ! -type l
> suppressed:~$
>
> Not a single world-writable file or directory.  Perhaps pre-release
> kernel tarballs are more lax?

  Seems to. I just checked linux-2.6.13 and linux-2.6.17.6. While the
  first has no world writeable files or directories at all the latter
  has tons of it. Interesting.

  Cheers,

  Chris Kronberg.