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

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Message-ID: <17664.29038.7854.471027@mail.linux-delhi.org>
Date: Fri, 8 Sep 2006 00:52:22 +0530
From: Raj Mathur <raju@...ux-delhi.org>
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Re: [Full-disclosure] Linux kernel source archive vulnerable

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>>>>> "Hadmut" == Hadmut Danisch <hadmut@...isch.de> 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:

raju@...l:~$ find /usr/src/linux-2.6.16/ -perm -666 ! -type l
raju@...l:~$

Not a single world-writable file or directory.  Perhaps pre-release
kernel tarballs are more lax?

Regards,

- -- Raju
- -- 
Raj Mathur                raju@...dalaya.org      http://kandalaya.org/
       GPG: 78D4 FC67 367F 40E2 0DD5  0FEF C968 D0EF CC68 D17F
                      It is the mind that moves
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