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Red Hat Security Advisory

Synopsis: Moderate: coreutils security and bug fix update
Advisory ID: RHSA-2017:0654-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0654.html
Issue date: 2017-03-21
CVE Names: CVE-2017-2616
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1. Summary:

An update for coreutils is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64

3. Description:

The coreutils packages contain the GNU Core Utilities and represent a
combination of the previously used GNU fileutils, sh-utils, and textutils
packages.

Security Fix(es):

* A race condition was found in the way su handled the management of child
processes. A local authenticated attacker could use this flaw to kill other
processes with root privileges under specific conditions. (CVE-2017-2616)

Red Hat would like to thank Tobias Stöckmann for reporting this issue.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9
Technical Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

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

1321643 – Bug in /etc/profile.d/colorls.sh when using the ksh shell [el6]
1418710 – CVE-2017-2616 util-linux: Sending SIGKILL to other processes with root privileges via su

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
coreutils-8.4-46.el6.src.rpm

i386:
coreutils-8.4-46.el6.i686.rpm
coreutils-debuginfo-8.4-46.el6.i686.rpm
coreutils-libs-8.4-46.el6.i686.rpm

x86_64:
coreutils-8.4-46.el6.x86_64.rpm
coreutils-debuginfo-8.4-46.el6.x86_64.rpm
coreutils-libs-8.4-46.el6.x86_64.rpm

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

Source:
coreutils-8.4-46.el6.src.rpm

x86_64:
coreutils-8.4-46.el6.x86_64.rpm
coreutils-debuginfo-8.4-46.el6.x86_64.rpm
coreutils-libs-8.4-46.el6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
coreutils-8.4-46.el6.src.rpm

i386:
coreutils-8.4-46.el6.i686.rpm
coreutils-debuginfo-8.4-46.el6.i686.rpm
coreutils-libs-8.4-46.el6.i686.rpm

ppc64:
coreutils-8.4-46.el6.ppc64.rpm
coreutils-debuginfo-8.4-46.el6.ppc64.rpm
coreutils-libs-8.4-46.el6.ppc64.rpm

s390x:
coreutils-8.4-46.el6.s390x.rpm
coreutils-debuginfo-8.4-46.el6.s390x.rpm
coreutils-libs-8.4-46.el6.s390x.rpm

x86_64:
coreutils-8.4-46.el6.x86_64.rpm
coreutils-debuginfo-8.4-46.el6.x86_64.rpm
coreutils-libs-8.4-46.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
coreutils-8.4-46.el6.src.rpm

i386:
coreutils-8.4-46.el6.i686.rpm
coreutils-debuginfo-8.4-46.el6.i686.rpm
coreutils-libs-8.4-46.el6.i686.rpm

x86_64:
coreutils-8.4-46.el6.x86_64.rpm
coreutils-debuginfo-8.4-46.el6.x86_64.rpm
coreutils-libs-8.4-46.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/

7. References:

https://access.redhat.com/security/cve/CVE-2017-2616
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2017 Red Hat, Inc.
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