[RHSA-2012:0307-03] Low: util-linux security, bug fix, and enhancement update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Low: util-linux security, bug fix, and enhancement update

Advisory ID: RHSA-2012:0307-03

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0307.html

Issue date: 2012-02-21

Keywords: fdisk fsfreeze blockdev ipc

CVE Names: CVE-2011-1675 CVE-2011-1677

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1. Summary:

 

An updated util-linux package that fixes multiple security issues, various

bugs, and adds two enhancements is 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:

 

The util-linux package contains a large variety of low-level system

utilities that are necessary for a Linux system to function. Among others,

util-linux contains the fdisk configuration tool and the login program.

 

Multiple flaws were found in the way the mount and umount commands

performed mtab (mounted file systems table) file updates. A local,

unprivileged user allowed to mount or unmount file systems could use these

flaws to corrupt the mtab file and create a stale lock file, preventing

other users from mounting and unmounting file systems. (CVE-2011-1675,

CVE-2011-1677)

 

This update also fixes the following bugs:

 

* When the user logged into a telnet server, the login utility did not

update the utmp database properly if the utility was executed from the

telnetd daemon. This was due to telnetd not creating an appropriate entry

in a utmp file before executing login. With this update, correct entries

are created and the database is updated properly. (BZ#646300)

 

* Various options were not described on the blockdev(8) manual page. With

this update, the blockdev(8) manual page includes all the relevant options.

(BZ#650937)

 

* Prior to this update, the build process of the util-linux package failed

in the po directory with the following error message: " ( -at -) MKINSTALLDIRS ( -at -) :

No such file or directory". An upstream patch has been applied to address

this issue, and the util-linux package now builds successfully. (BZ#677452)

 

* Previously, the ipcs(1) and ipcrm(1) manual pages mentioned an invalid

option, "-b". With this update, only valid options are listed on those

manual pages. (BZ#678407)

 

* Previously, the mount(8) manual page contained incomplete information

about the ext4 and XFS file systems. With this update, the mount(8) manual

page contains the missing information. (BZ#699639)

 

In addition, this update adds the following enhancements:

 

* Previously, if DOS mode was enabled on a device, the fdisk utility could

report error messages similar to the following:

 

Partition 1 has different physical/logical beginnings (non-Linux?):

phys=(0, 1, 1) logical=(0, 2, 7)

 

This update enables users to switch off DOS compatible mode (by specifying

the "-c" option), and such error messages are no longer displayed.

(BZ#678430)

 

* This update adds the "fsfreeze" command which halts access to a file

system on a disk. (BZ#726572)

 

All users of util-linux are advised to upgrade to this updated package,

which contains 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/kb/docs/DOC-11259

 

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

 

646300 - login doesn't update /var/run/utmp properly

650937 - blockdev man page missing information

677452 - util-linux fails to build with gettext-0.17

678407 - [RHEL 5] ipcs and ipcrm in wrong man section

695916 - CVE-2011-1675 util-linux: mount fails to anticipate RLIMIT_FSIZE

695924 - CVE-2011-1677 util-linux: umount may fail to remove /etc/mtab~ lock file

699639 - mount man page is missing support for ext4/xfs

 

6. Package List:

 

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

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/util-linux-2.13-0.59.el5.src.rpm

 

i386:

util-linux-2.13-0.59.el5.i386.rpm

util-linux-debuginfo-2.13-0.59.el5.i386.rpm

 

x86_64:

util-linux-2.13-0.59.el5.x86_64.rpm

util-linux-debuginfo-2.13-0.59.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/util-linux-2.13-0.59.el5.src.rpm

 

i386:

util-linux-2.13-0.59.el5.i386.rpm

util-linux-debuginfo-2.13-0.59.el5.i386.rpm

 

ia64:

util-linux-2.13-0.59.el5.ia64.rpm

util-linux-debuginfo-2.13-0.59.el5.ia64.rpm

 

ppc:

util-linux-2.13-0.59.el5.ppc.rpm

util-linux-debuginfo-2.13-0.59.el5.ppc.rpm

 

s390x:

util-linux-2.13-0.59.el5.s390x.rpm

util-linux-debuginfo-2.13-0.59.el5.s390x.rpm

 

x86_64:

util-linux-2.13-0.59.el5.x86_64.rpm

util-linux-debuginfo-2.13-0.59.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-2011-1675.html

https://www.redhat.com/security/data/cve/CVE-2011-1677.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.

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