[RHSA-2012:0308-03] Low: busybox security and bug fix update

[news 28]

-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

 

=====================================================================

Red Hat Security Advisory

 

Synopsis: Low: busybox security and bug fix update

Advisory ID: RHSA-2012:0308-03

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0308.html

Issue date: 2012-02-21

CVE Names: CVE-2006-1168 CVE-2011-2716

=====================================================================

 

1. Summary:

 

Updated busybox packages that fix two security issues and two bugs are now

available for Red Hat Enterprise Linux 5.

 

The Red Hat Security Response Team has rated this update as having low

security impact. Common Vulnerability Scoring System (CVSS) base scores,

which give detailed severity ratings, are available for each vulnerability

from the CVE links in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

 

3. Description:

 

BusyBox provides a single binary that includes versions of a large number

of system commands, including a shell. This can be very useful for

recovering from certain types of system failures, particularly those

involving broken shared libraries.

 

A buffer underflow flaw was found in the way the uncompress utility of

BusyBox expanded certain archive files compressed using Lempel-Ziv

compression. If a user were tricked into expanding a specially-crafted

archive file with uncompress, it could cause BusyBox to crash or,

potentially, execute arbitrary code with the privileges of the user running

BusyBox. (CVE-2006-1168)

 

The BusyBox DHCP client, udhcpc, did not sufficiently sanitize certain

options provided in DHCP server replies, such as the client hostname. A

malicious DHCP server could send such an option with a specially-crafted

value to a DHCP client. If this option's value was saved on the client

system, and then later insecurely evaluated by a process that assumes the

option is trusted, it could lead to arbitrary code execution with the

privileges of that process. Note: udhcpc is not used on Red Hat Enterprise

Linux by default, and no DHCP client script is provided with the busybox

packages. (CVE-2011-2716)

 

This update also fixes the following bugs:

 

* Prior to this update, the cp command wrongly returned the exit code 0 to

indicate success if a device ran out of space while attempting to copy

files of more than 4 gigabytes. This update modifies BusyBox, so that in

such situations, the exit code 1 is returned. Now, the cp command shows

correctly whether a process failed. (BZ#689659)

 

* Prior to this update, the findfs command failed to check all existing

block devices on a system with thousands of block device nodes in "/dev/".

This update modifies BusyBox so that findfs checks all block devices even

in this case. (BZ#756723)

 

All users of busybox are advised to upgrade to these updated packages,

which correct these issues.

 

4. Solution:

 

Before applying this update, make sure all previously-released errata

relevant to your system have been applied.

 

This update is available via the Red Hat Network. Details on how to

use the Red Hat Network to apply this update are available at

https://access.redhat.com/kb/docs/DOC-11259

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

201919 - CVE-2006-1168 ncompress: .bss buffer underflow in decompression

689659 - "busybox cp" does not return a correct exit code when "No space left on device"

725364 - CVE-2011-2716 busybox: udhcpc insufficient checking of DHCP options

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/busybox-1.2.0-13.el5.src.rpm

 

i386:

busybox-1.2.0-13.el5.i386.rpm

busybox-anaconda-1.2.0-13.el5.i386.rpm

 

x86_64:

busybox-1.2.0-13.el5.x86_64.rpm

busybox-anaconda-1.2.0-13.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/busybox-1.2.0-13.el5.src.rpm

 

i386:

busybox-1.2.0-13.el5.i386.rpm

busybox-anaconda-1.2.0-13.el5.i386.rpm

 

ia64:

busybox-1.2.0-13.el5.ia64.rpm

busybox-anaconda-1.2.0-13.el5.ia64.rpm

 

ppc:

busybox-1.2.0-13.el5.ppc.rpm

busybox-anaconda-1.2.0-13.el5.ppc.rpm

 

s390x:

busybox-1.2.0-13.el5.s390x.rpm

busybox-anaconda-1.2.0-13.el5.s390x.rpm

 

x86_64:

busybox-1.2.0-13.el5.x86_64.rpm

busybox-anaconda-1.2.0-13.el5.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2006-1168.html

https://www.redhat.com/security/data/cve/CVE-2011-2716.html

https://access.redhat.com/security/updates/classification/#low

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2012 Red Hat, Inc.

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.4 (GNU/Linux)

 

iD8DBQFPQyMjXlSAg2UNWIIRAtsmAKCHQFq9zIBT1ytvuju+KpmtBHW4/gCeNg/5

E12Zm9ZS69gQP9qN8MdudeU=

=DWg5

-----END PGP SIGNATURE-----

 

 

--