[PLUG] Thin Client Security [Fwd: [SECURITY] [DSA 219-1] New dhcpcd packages fix remote command execution vulnerability]

Cooper Stevenson cooper at linux-enterprise.net
Tue Dec 31 11:19:03 UTC 2002


Karl,

I must confess I hadn't thought about it this way but now that you
mention it I definitely don't need people viewing an accountant's data
on the client through the DHCP server!!

Silly crackers, spreadsheets are for accountants!


-Cooper

On Tue, 2002-12-31 at 10:59, Karl M. Hegbloom wrote:
> This is the sort of thing you worry about, perhaps?
> 
> ----
> 

> From: Martin Schulze <joey at infodrom.org>
> To: Debian Security Announcements <debian-security-announce at lists.debian.org>
> Subject: [SECURITY] [DSA 219-1] New dhcpcd packages fix remote command execution vulnerability
> Date: 31 Dec 2002 14:19:06 +0100
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> - --------------------------------------------------------------------------
> Debian Security Advisory DSA 219-1                     security at debian.org
> http://www.debian.org/security/                             Martin Schulze
> December 31st, 2002                     http://www.debian.org/security/faq
> - --------------------------------------------------------------------------
> 
> Package        : dhcpcd
> Vulnerability  : remote command execution
> Problem-Type   : remote
> Debian-specific: no
> BugTraq Id     : 6200
> 
> Simon Kelly discovered a vulnerability in dhcpcd, an RFC2131 and
> RFC1541 compliant DHCP client daemon, that runs with root privileges
> on client machines.  A malicious administrator of the regular or an
> untrusted DHCP server may execute any command with root privileges on
> the DHCP client machine by sending the command enclosed in shell
> metacharacters in one of the options provided by the DHCP server.
> 
> This problem has been fixed in version 1.3.17pl2-8.1 for the old
> stable distribution (potato) and in version 1.3.22pl2-2 for the
> testing (sarge) and unstable (sid) distributions.  The current stable
> distribution (woody) does not contain a dhcpcd package.
> 
> We recommend that you upgrade your dhcpcd package (on the client
> machine).
> 
> wget url
>         will fetch the file for you
> dpkg -i file.deb
>         will install the referenced file.
> 
> If you are using the apt-get package manager, use the line for
> sources.list as given below:
> 
> apt-get update
>         will update the internal database
> apt-get upgrade
>         will install corrected packages
> 
> You may use an automated update by adding the resources from the
> footer to the proper configuration.
> 
> 
> Debian GNU/Linux 2.2 alias potato
> - ---------------------------------
> 
>   Source archives:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1.dsc
>       Size/MD5 checksum:      538 1c19758ca0d21405a7d5558b79873bcd
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1.diff.gz
>       Size/MD5 checksum:    12839 95c26c2d2ea5bfc820b125ce7a409036
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2.orig.tar.gz
>       Size/MD5 checksum:   152368 c23be689d4725eca9bbc65ad3cb85049
> 
>   Alpha architecture:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1_alpha.deb
>       Size/MD5 checksum:    49666 d3e56f10c3a360dec6e32881dd29ee11
> 
>   ARM architecture:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1_arm.deb
>       Size/MD5 checksum:    40160 54f8b2b37f203ae7df2afb1342183989
> 
>   Intel IA-32 architecture:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1_i386.deb
>       Size/MD5 checksum:    37422 2217cc83b78e829037faebf2c66cf1c5
> 
>   Motorola 680x0 architecture:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1_m68k.deb
>       Size/MD5 checksum:    36242 5aa43b776c6609a4b12fa20ce6be08fe
> 
>   PowerPC architecture:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1_powerpc.deb
>       Size/MD5 checksum:    39432 53a3ab3c9ca17f562c7d9280c0ae7e56
> 
>   Sun Sparc architecture:
> 
>     http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.17pl2-8.1_sparc.deb
>       Size/MD5 checksum:    41544 084cc56b2d43ab9c79ac075cef8d9f84
> 
> 
>   These files will probably be moved into the stable distribution on
>   its next revision.
> 
> - ---------------------------------------------------------------------------------
> For apt-get: deb http://security.debian.org/ stable/updates main
> For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
> Mailing list: debian-security-announce at lists.debian.org
> Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
> 
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> 
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