Synopsis

Low: busybox security and bug fix update

Type/Severity

Security Advisory: Low

Topic

Updated busybox packages that fix one security issue and several bugs are
now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

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.

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.

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

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386

Fixes

• BZ - 820097 - s390x: wc: : No such file or directory
• BZ - 919608 - CVE-2013-1813 busybox: insecure directory permissions in /dev

CVEs

• CVE-2013-1813

References

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

Red Hat Enterprise Linux Server 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
x86_64
busybox-1.15.1-20.el6.x86_64.rpm	SHA-256: b35205daf97e4056835cbfd50d6cedc63ff2844c8e930577096924b13cc0b6f9
busybox-petitboot-1.15.1-20.el6.x86_64.rpm	SHA-256: 361fd8016590c2d770ab4ec89d3f9a2f82662f819d1d874f6ae8f2e7413cd0d2
i386
busybox-1.15.1-20.el6.i686.rpm	SHA-256: a72fab8d9ed17876f225b46cf15700585eb32b8f70ebf90122e80e8a74f56b2f
busybox-petitboot-1.15.1-20.el6.i686.rpm	SHA-256: 82dc2791429f2e3617af9e4876c1cb8b506640a9650bda0b7edf7322c9a0cc8c

Red Hat Enterprise Linux Workstation 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
x86_64
busybox-1.15.1-20.el6.x86_64.rpm	SHA-256: b35205daf97e4056835cbfd50d6cedc63ff2844c8e930577096924b13cc0b6f9
busybox-petitboot-1.15.1-20.el6.x86_64.rpm	SHA-256: 361fd8016590c2d770ab4ec89d3f9a2f82662f819d1d874f6ae8f2e7413cd0d2
i386
busybox-1.15.1-20.el6.i686.rpm	SHA-256: a72fab8d9ed17876f225b46cf15700585eb32b8f70ebf90122e80e8a74f56b2f
busybox-petitboot-1.15.1-20.el6.i686.rpm	SHA-256: 82dc2791429f2e3617af9e4876c1cb8b506640a9650bda0b7edf7322c9a0cc8c

Red Hat Enterprise Linux Desktop 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
x86_64
busybox-1.15.1-20.el6.x86_64.rpm	SHA-256: b35205daf97e4056835cbfd50d6cedc63ff2844c8e930577096924b13cc0b6f9
busybox-petitboot-1.15.1-20.el6.x86_64.rpm	SHA-256: 361fd8016590c2d770ab4ec89d3f9a2f82662f819d1d874f6ae8f2e7413cd0d2
i386
busybox-1.15.1-20.el6.i686.rpm	SHA-256: a72fab8d9ed17876f225b46cf15700585eb32b8f70ebf90122e80e8a74f56b2f
busybox-petitboot-1.15.1-20.el6.i686.rpm	SHA-256: 82dc2791429f2e3617af9e4876c1cb8b506640a9650bda0b7edf7322c9a0cc8c

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
s390x
busybox-1.15.1-20.el6.s390x.rpm	SHA-256: 80513d1a8d580468b2de54378fa0c7b6990b96f087ffdff54fdf418ccc6db9cf
busybox-petitboot-1.15.1-20.el6.s390x.rpm	SHA-256: 18f9693b99fd52999bca64236074e643fa3737ef58eede339a759ee45f24ee8c

Red Hat Enterprise Linux for Power, big endian 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
ppc64
busybox-1.15.1-20.el6.ppc64.rpm	SHA-256: e8dd4767dceecb7c1e961d50004717ea9cde6c68e8523fc0e72fd6df5c514b6b
busybox-petitboot-1.15.1-20.el6.ppc64.rpm	SHA-256: 6b2f7b5ab98c65192e55a9b2401d60b77a5b60ffaf0fe67d9581475ef59686d2

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
x86_64
busybox-1.15.1-20.el6.x86_64.rpm	SHA-256: b35205daf97e4056835cbfd50d6cedc63ff2844c8e930577096924b13cc0b6f9
busybox-petitboot-1.15.1-20.el6.x86_64.rpm	SHA-256: 361fd8016590c2d770ab4ec89d3f9a2f82662f819d1d874f6ae8f2e7413cd0d2

Red Hat Enterprise Linux Server from RHUI 6

SRPM
busybox-1.15.1-20.el6.src.rpm	SHA-256: 20e8889763272c1c32b1f4ebf5a5a1912965edec627345abd416e97079d5053b
x86_64
busybox-1.15.1-20.el6.x86_64.rpm	SHA-256: b35205daf97e4056835cbfd50d6cedc63ff2844c8e930577096924b13cc0b6f9
busybox-petitboot-1.15.1-20.el6.x86_64.rpm	SHA-256: 361fd8016590c2d770ab4ec89d3f9a2f82662f819d1d874f6ae8f2e7413cd0d2
i386
busybox-1.15.1-20.el6.i686.rpm	SHA-256: a72fab8d9ed17876f225b46cf15700585eb32b8f70ebf90122e80e8a74f56b2f
busybox-petitboot-1.15.1-20.el6.i686.rpm	SHA-256: 82dc2791429f2e3617af9e4876c1cb8b506640a9650bda0b7edf7322c9a0cc8c