Red Hat: 2013:1732-02: busybox: Low Advisory
Summary
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.
It was found that the mdev BusyBox utility could create certain directories
within /dev with world-writable permissions. A local unprivileged user
could use this flaw to manipulate portions of the /dev directory tree.
(CVE-2013-1813)
This update also fixes the following bugs:
* Previously, due to a too eager string size optimization on the IBM System
z architecture, the "wc" BusyBox command failed after processing standard
input with the following error:
wc: : No such file or directory
This bug was fixed by disabling the string size optimization and the "wc"
command works properly on IBM System z architectures. (BZ#820097)
* Prior to this update, the "mknod" command was unable to create device
nodes with a major or minor number larger than 255. Consequently, the kdump
utility failed to handle such a device. The underlying source code has been
modified, and it is now possible to use the "mknod" command to create
device nodes with a major or minor number larger than 255. (BZ#859817)
* If a network installation from an NFS server was selected, the "mount"
command used the UDP protocol by default. If only TCP mounts were supported
by the server, this led to a failure of the mount command. As a result,
Anaconda could not continue with the installation. This bug is now fixed
and NFS mount operations default to the TCP protocol. (BZ#855832)
All busybox users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.
Summary
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/site/articles/11258
References
https://www.redhat.com/security/data/cve/CVE-2013-1813.html https://access.redhat.com/security/updates/classification/#low
Package List
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
busybox-1.15.1-20.el6.i686.rpm
x86_64:
busybox-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
busybox-petitboot-1.15.1-20.el6.i686.rpm
x86_64:
busybox-petitboot-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64:
busybox-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64:
busybox-petitboot-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
busybox-1.15.1-20.el6.i686.rpm
ppc64:
busybox-1.15.1-20.el6.ppc64.rpm
s390x:
busybox-1.15.1-20.el6.s390x.rpm
x86_64:
busybox-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386:
busybox-petitboot-1.15.1-20.el6.i686.rpm
ppc64:
busybox-petitboot-1.15.1-20.el6.ppc64.rpm
s390x:
busybox-petitboot-1.15.1-20.el6.s390x.rpm
x86_64:
busybox-petitboot-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
busybox-1.15.1-20.el6.i686.rpm
x86_64:
busybox-1.15.1-20.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
i386:
busybox-petitboot-1.15.1-20.el6.i686.rpm
x86_64:
busybox-petitboot-1.15.1-20.el6.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
Topic
Updated busybox packages that fix one security issue and several bugs arenow available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having lowsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Bugs Fixed
820097 - s390x: wc: : No such file or directory
919608 - CVE-2013-1813 busybox: insecure directory permissions in /dev