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[RHSA-2013:1674-02] Moderate: dracut security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: dracut security, bug fix, and enhancement update

Advisory ID: RHSA-2013:1674-02

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-1674.html

Issue date: 2013-11-21

CVE Names: CVE-2012-4453

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

 

1. Summary:

 

Updated dracut packages that fix one security issue, several bugs, and add

two enhancements are now available for Red Hat Enterprise Linux 6.

 

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

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.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Desktop (v. 6) - noarch

Red Hat Enterprise Linux Desktop Optional (v. 6) - noarch

Red Hat Enterprise Linux HPC Node (v. 6) - noarch

Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch

Red Hat Enterprise Linux Server (v. 6) - noarch

Red Hat Enterprise Linux Server Optional (v. 6) - noarch

Red Hat Enterprise Linux Workstation (v. 6) - noarch

Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch

 

3. Description:

 

The dracut packages include an event-driven initramfs generator

infrastructure based on the udev device manager. The virtual file system,

initramfs, is loaded together with the kernel at boot time and initializes

the system, so it can read and boot from the root partition.

 

It was discovered that dracut created initramfs images as world readable.

A local user could possibly use this flaw to obtain sensitive information

from these files, such as iSCSI authentication passwords, encrypted root

file system crypttab passwords, or other information. (CVE-2012-4453)

 

This issue was discovered by Peter Jones of the Red Hat Installer Team.

 

These updated dracut packages include numerous bug fixes and two

enhancements. Space precludes documenting all of these changes in this

advisory. Users are directed to the Red Hat Enterprise Linux 6.5 Technical

Notes, linked to in the References, for information on the most significant

of these changes.

 

All dracut users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues and add these

enhancements.

 

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/site/articles/11258

 

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

 

610462 - mkinitrd has no man page

720684 - Booting with snapshot of / requires non user-friendly config

859448 - CVE-2012-4453 dracut: Creates initramfs images with world-readable permissions (information disclosure)

912299 - kernel installation fails if GREP_OPTIONS is set

1012626 - [FIPS140] dracut-fip updates needed for certification

1019104 - Interface renaming via ifname does not work for RHEL-6.5

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-004-336.el6.noarch.rpm

dracut-fips-004-336.el6.noarch.rpm

dracut-kernel-004-336.el6.noarch.rpm

dracut-network-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-caps-004-336.el6.noarch.rpm

dracut-fips-aesni-004-336.el6.noarch.rpm

dracut-generic-004-336.el6.noarch.rpm

dracut-tools-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-004-336.el6.noarch.rpm

dracut-fips-004-336.el6.noarch.rpm

dracut-kernel-004-336.el6.noarch.rpm

dracut-network-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-caps-004-336.el6.noarch.rpm

dracut-fips-aesni-004-336.el6.noarch.rpm

dracut-generic-004-336.el6.noarch.rpm

dracut-tools-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-004-336.el6.noarch.rpm

dracut-fips-004-336.el6.noarch.rpm

dracut-kernel-004-336.el6.noarch.rpm

dracut-network-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-caps-004-336.el6.noarch.rpm

dracut-fips-aesni-004-336.el6.noarch.rpm

dracut-generic-004-336.el6.noarch.rpm

dracut-tools-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-004-336.el6.noarch.rpm

dracut-fips-004-336.el6.noarch.rpm

dracut-kernel-004-336.el6.noarch.rpm

dracut-network-004-336.el6.noarch.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dracut-004-336.el6.src.rpm

 

noarch:

dracut-caps-004-336.el6.noarch.rpm

dracut-fips-aesni-004-336.el6.noarch.rpm

dracut-generic-004-336.el6.noarch.rpm

dracut-tools-004-336.el6.noarch.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-2012-4453.html

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

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.5_Technical_Notes/dracut.html#RHSA-2013-1674

 

8. Contact:

 

The Red Hat security contact is . More contact

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

 

Copyright 2013 Red Hat, Inc.

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