RHSA-2005:782-01 Moderate: util-linux and mount security update
Posted on: 10/11/2005 10:12 AM

A new update is available for Red Hat Enterprise Linux. Here the announcement:

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Red Hat Security Advisory

Synopsis: Moderate: util-linux and mount security update
Advisory ID: RHSA-2005:782-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-782.html
Issue date: 2005-10-11
Updated on: 2005-10-11
Product: Red Hat Enterprise Linux
CVE Names: CAN-2005-2876 CAN-2001-1494
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1. Summary:

Updated util-linux and mount packages that fix two security issues are now
available.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

The util-linux package contains a large variety of low-level system
utilities that are necessary for a Linux system to function.

The mount package contains the mount, umount, swapon and swapoff programs.

A bug was found in the way the umount command is executed by normal users.
It may be possible for a user to gain elevated privileges if the user is
able to execute the "umount -r" command on a mounted file system. The
file system will be re-mounted only with the "readonly" flag set, clearing
flags such as "nosuid" and "noexec". The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-2876 to
this issue.

This update also fixes a hardlink bug in the script command for Red Hat
Enterprise Linux 2.1. If a local user places a hardlinked file named
"typescript" in a directory they have write access to, the file will be
overwritten if the user running script has write permissions to the
destination file. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2001-1494 to this issue.

All users of util-linux and mount should upgrade to these updated packages,
which contain backported patches to 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 Red Hat Network. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed (http://bugzilla.redhat.com/):

161337 - CAN-2001-1494 hardlink vulnerability in 'script' command
168206 - CAN-2005-2876 umount unsafe -r usage
168209 - CAN-2005-2876 umount unsafe -r usage


6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/mount-2.11g-9.src.rpm
d3282353910c50c68ebfb44cacb6c30f mount-2.11g-9.src.rpm
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/util-linux-2.11f-20.8.src.rpm
8a7547d3dd15711353a976fd47e04176 util-linux-2.11f-20.8.src.rpm

i386:
7e1c7b7c2c2fa29085e7e6897e88078d losetup-2.11g-9.i386.rpm
ffaa56d9acad22b210f2f4ea509b5ec1 mount-2.11g-9.i386.rpm
3e64e8635bd18d364511ad564dab373f util-linux-2.11f-20.8.i386.rpm

ia64:
6f83321e29bfe52139ae9255dead0f9c losetup-2.11g-9.ia64.rpm
8ce58c073113458c7a35df7912ea3746 mount-2.11g-9.ia64.rpm
ea0ede106e89ece2883f5dfa545c1429 util-linux-2.11f-20.8.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/mount-2.11g-9.src.rpm
d3282353910c50c68ebfb44cacb6c30f mount-2.11g-9.src.rpm
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/util-linux-2.11f-20.8.src.rpm
8a7547d3dd15711353a976fd47e04176 util-linux-2.11f-20.8.src.rpm

ia64:
6f83321e29bfe52139ae9255dead0f9c losetup-2.11g-9.ia64.rpm
8ce58c073113458c7a35df7912ea3746 mount-2.11g-9.ia64.rpm
ea0ede106e89ece2883f5dfa545c1429 util-linux-2.11f-20.8.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/mount-2.11g-9.src.rpm
d3282353910c50c68ebfb44cacb6c30f mount-2.11g-9.src.rpm
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/util-linux-2.11f-20.8.src.rpm
8a7547d3dd15711353a976fd47e04176 util-linux-2.11f-20.8.src.rpm

i386:
7e1c7b7c2c2fa29085e7e6897e88078d losetup-2.11g-9.i386.rpm
ffaa56d9acad22b210f2f4ea509b5ec1 mount-2.11g-9.i386.rpm
3e64e8635bd18d364511ad564dab373f util-linux-2.11f-20.8.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/mount-2.11g-9.src.rpm
d3282353910c50c68ebfb44cacb6c30f mount-2.11g-9.src.rpm
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/util-linux-2.11f-20.8.src.rpm
8a7547d3dd15711353a976fd47e04176 util-linux-2.11f-20.8.src.rpm

i386:
7e1c7b7c2c2fa29085e7e6897e88078d losetup-2.11g-9.i386.rpm
ffaa56d9acad22b210f2f4ea509b5ec1 mount-2.11g-9.i386.rpm
3e64e8635bd18d364511ad564dab373f util-linux-2.11f-20.8.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/util-linux-2.11y-31.11.src.rpm
7a562d571237203634c8009d2c506921 util-linux-2.11y-31.11.src.rpm

i386:
b89a7d466e3cead507c00776aae3b437 losetup-2.11y-31.11.i386.rpm
df678149ef9fe3c088f7ca6af1697337 mount-2.11y-31.11.i386.rpm
e5fa25f4caa04749eb39430e45ab7bd3 util-linux-2.11y-31.11.i386.rpm

ia64:
ebbb6f700b72357c03220f32a1e8a164 losetup-2.11y-31.11.ia64.rpm
67526f76a9e66c74faad8ce7ce290a9d mount-2.11y-31.11.ia64.rpm
00657fbd14ab30ddec29724783288fb1 util-linux-2.11y-31.11.ia64.rpm

ppc:
b4fb144ebf8ba11e59fbac9de6bd2b95 losetup-2.11y-31.11.ppc.rpm
2638872b02dd777c17bc30e2f6489f04 mount-2.11y-31.11.ppc.rpm
70a8b932588c3c36232b9e447c4bb9c3 util-linux-2.11y-31.11.ppc.rpm

s390:
e4f001ff1d9fd90e0c582031fa3b0216 losetup-2.11y-31.11.s390.rpm
a6a1ca2a10b378fb25d4a862ef3cb645 mount-2.11y-31.11.s390.rpm
068f5f2c4f13dd5b45af98a9ea3c9da5 util-linux-2.11y-31.11.s390.rpm

s390x:
303c1e4eb9a401bb562e95f112cb86ad losetup-2.11y-31.11.s390x.rpm
5ad992ec8f902bced723a7b06c5febb2 mount-2.11y-31.11.s390x.rpm
b0d09f13c674c79fb04a389765517473 util-linux-2.11y-31.11.s390x.rpm

x86_64:
d7a946efdfbf418dad33828622c9f550 losetup-2.11y-31.11.x86_64.rpm
b90e15d4e39913757550b9362a98bfb2 mount-2.11y-31.11.x86_64.rpm
6f2df633740943a84fa5f06d3ff41f54 util-linux-2.11y-31.11.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/util-linux-2.11y-31.11.src.rpm
7a562d571237203634c8009d2c506921 util-linux-2.11y-31.11.src.rpm

i386:
b89a7d466e3cead507c00776aae3b437 losetup-2.11y-31.11.i386.rpm
df678149ef9fe3c088f7ca6af1697337 mount-2.11y-31.11.i386.rpm
e5fa25f4caa04749eb39430e45ab7bd3 util-linux-2.11y-31.11.i386.rpm

x86_64:
d7a946efdfbf418dad33828622c9f550 losetup-2.11y-31.11.x86_64.rpm
b90e15d4e39913757550b9362a98bfb2 mount-2.11y-31.11.x86_64.rpm
6f2df633740943a84fa5f06d3ff41f54 util-linux-2.11y-31.11.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/util-linux-2.11y-31.11.src.rpm
7a562d571237203634c8009d2c506921 util-linux-2.11y-31.11.src.rpm

i386:
b89a7d466e3cead507c00776aae3b437 losetup-2.11y-31.11.i386.rpm
df678149ef9fe3c088f7ca6af1697337 mount-2.11y-31.11.i386.rpm
e5fa25f4caa04749eb39430e45ab7bd3 util-linux-2.11y-31.11.i386.rpm

ia64:
ebbb6f700b72357c03220f32a1e8a164 losetup-2.11y-31.11.ia64.rpm
67526f76a9e66c74faad8ce7ce290a9d mount-2.11y-31.11.ia64.rpm
00657fbd14ab30ddec29724783288fb1 util-linux-2.11y-31.11.ia64.rpm

x86_64:
d7a946efdfbf418dad33828622c9f550 losetup-2.11y-31.11.x86_64.rpm
b90e15d4e39913757550b9362a98bfb2 mount-2.11y-31.11.x86_64.rpm
6f2df633740943a84fa5f06d3ff41f54 util-linux-2.11y-31.11.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/util-linux-2.11y-31.11.src.rpm
7a562d571237203634c8009d2c506921 util-linux-2.11y-31.11.src.rpm

i386:
b89a7d466e3cead507c00776aae3b437 losetup-2.11y-31.11.i386.rpm
df678149ef9fe3c088f7ca6af1697337 mount-2.11y-31.11.i386.rpm
e5fa25f4caa04749eb39430e45ab7bd3 util-linux-2.11y-31.11.i386.rpm

ia64:
ebbb6f700b72357c03220f32a1e8a164 losetup-2.11y-31.11.ia64.rpm
67526f76a9e66c74faad8ce7ce290a9d mount-2.11y-31.11.ia64.rpm
00657fbd14ab30ddec29724783288fb1 util-linux-2.11y-31.11.ia64.rpm

x86_64:
d7a946efdfbf418dad33828622c9f550 losetup-2.11y-31.11.x86_64.rpm
b90e15d4e39913757550b9362a98bfb2 mount-2.11y-31.11.x86_64.rpm
6f2df633740943a84fa5f06d3ff41f54 util-linux-2.11y-31.11.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/util-linux-2.12a-16.EL4.12.src.rpm
fbbc6f06d4675b42e2bd0ba1bd1d6c57 util-linux-2.12a-16.EL4.12.src.rpm

i386:
beb2444974794726ad73218c92ca2336 util-linux-2.12a-16.EL4.12.i386.rpm

ia64:
811dcc7c533e68518555267c9c793b6e util-linux-2.12a-16.EL4.12.ia64.rpm

ppc:
deedcd5da6fcedff331a3e71b09b74c6 util-linux-2.12a-16.EL4.12.ppc.rpm

s390:
390077578fdd458b402328d53ab574b8 util-linux-2.12a-16.EL4.12.s390.rpm

s390x:
c3324d5388df1577789df5b486ec810b util-linux-2.12a-16.EL4.12.s390x.rpm

x86_64:
f8f59f58506acb3ba4c3ce9b5a8cebc0 util-linux-2.12a-16.EL4.12.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/util-linux-2.12a-16.EL4.12.src.rpm
fbbc6f06d4675b42e2bd0ba1bd1d6c57 util-linux-2.12a-16.EL4.12.src.rpm

i386:
beb2444974794726ad73218c92ca2336 util-linux-2.12a-16.EL4.12.i386.rpm

x86_64:
f8f59f58506acb3ba4c3ce9b5a8cebc0 util-linux-2.12a-16.EL4.12.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/util-linux-2.12a-16.EL4.12.src.rpm
fbbc6f06d4675b42e2bd0ba1bd1d6c57 util-linux-2.12a-16.EL4.12.src.rpm

i386:
beb2444974794726ad73218c92ca2336 util-linux-2.12a-16.EL4.12.i386.rpm

ia64:
811dcc7c533e68518555267c9c793b6e util-linux-2.12a-16.EL4.12.ia64.rpm

x86_64:
f8f59f58506acb3ba4c3ce9b5a8cebc0 util-linux-2.12a-16.EL4.12.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/util-linux-2.12a-16.EL4.12.src.rpm
fbbc6f06d4675b42e2bd0ba1bd1d6c57 util-linux-2.12a-16.EL4.12.src.rpm

i386:
beb2444974794726ad73218c92ca2336 util-linux-2.12a-16.EL4.12.i386.rpm

ia64:
811dcc7c533e68518555267c9c793b6e util-linux-2.12a-16.EL4.12.ia64.rpm

x86_64:
f8f59f58506acb3ba4c3ce9b5a8cebc0 util-linux-2.12a-16.EL4.12.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2876
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-1494

8. Contact:

The Red Hat security contact is lt;secalert@redhat.comgt;. More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.
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