[RedHat] Schwachstelle in PolicyKit

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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.

Das Programm pkexec im Paket PolicyKit erlaubt einem autorisierten
Nutzer ein Programm mit anderen Rechten (als anderer Nutzer)
auszufuehren.

CVE-2011-1485 – Schwachstelle im PolicyKit

Durch eine Race Condition in der PolicyKit-Anwendung “pkexec” und in dem
polkitd-Daemon ist es einem lokalen Angreifer moeglich, sich als
privilegierter Nutzer auszugeben. Dadurch ist es ihm dann moeglich,
mittels “pkexec” beliebige Befehle mit Root-Privilegien auszufuehren.

Betroffen sind die folgenden Software Pakete und Plattformen:

Paket polkit

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

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.

Mit freundlichen Gruessen,
Timo Schulz

– —
Timo Schulz, M.Sc. (Incident Response Team)

DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-590
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski

Automatische Warnmeldungen: https://www.cert.dfn.de/autowarn

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=====================================================================
Red Hat Security Advisory

Synopsis: Important: polkit security update
Advisory ID: RHSA-2011:0455-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0455.html
Issue date: 2011-04-19
CVE Names: CVE-2011-1485
=====================================================================

1. Summary:

Updated polkit packages that fix one security issue are now available for
Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having
important 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) – i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) – noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, noarch, x86_64

3. Description:

PolicyKit is a toolkit for defining and handling authorizations.

A race condition flaw was found in the PolicyKit pkexec utility and polkitd
daemon. A local user could use this flaw to appear as a privileged user to
pkexec, allowing them to execute arbitrary commands as root by running
those commands with pkexec. (CVE-2011-1485)

Red Hat would like to thank Neel Mehta of Google for reporting this issue.

All polkit users should upgrade to these updated packages, which contain
backported patches to correct this issue. The system must be rebooted for
this update to take effect.

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/):

692922 – CVE-2011-1485 polkitd/pkexec vulnerability

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/polkit-0.96-2.el6_0.1.src.rpm

i386:
polkit-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm

noarch:
polkit-desktop-policy-0.96-2.el6_0.1.noarch.rpm

x86_64:
polkit-0.96-2.el6_0.1.i686.rpm
polkit-0.96-2.el6_0.1.x86_64.rpm
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/polkit-0.96-2.el6_0.1.src.rpm

i386:
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-devel-0.96-2.el6_0.1.i686.rpm
polkit-docs-0.96-2.el6_0.1.i686.rpm

x86_64:
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.x86_64.rpm
polkit-devel-0.96-2.el6_0.1.i686.rpm
polkit-devel-0.96-2.el6_0.1.x86_64.rpm
polkit-docs-0.96-2.el6_0.1.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/polkit-0.96-2.el6_0.1.src.rpm

x86_64:
polkit-0.96-2.el6_0.1.i686.rpm
polkit-0.96-2.el6_0.1.x86_64.rpm
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/polkit-0.96-2.el6_0.1.src.rpm

noarch:
polkit-desktop-policy-0.96-2.el6_0.1.noarch.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/polkit-0.96-2.el6_0.1.src.rpm

i386:
polkit-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-devel-0.96-2.el6_0.1.i686.rpm
polkit-docs-0.96-2.el6_0.1.i686.rpm

noarch:
polkit-desktop-policy-0.96-2.el6_0.1.noarch.rpm

ppc64:
polkit-0.96-2.el6_0.1.ppc.rpm
polkit-0.96-2.el6_0.1.ppc64.rpm
polkit-debuginfo-0.96-2.el6_0.1.ppc.rpm
polkit-debuginfo-0.96-2.el6_0.1.ppc64.rpm
polkit-devel-0.96-2.el6_0.1.ppc.rpm
polkit-devel-0.96-2.el6_0.1.ppc64.rpm
polkit-docs-0.96-2.el6_0.1.ppc64.rpm

s390x:
polkit-0.96-2.el6_0.1.s390.rpm
polkit-0.96-2.el6_0.1.s390x.rpm
polkit-debuginfo-0.96-2.el6_0.1.s390.rpm
polkit-debuginfo-0.96-2.el6_0.1.s390x.rpm
polkit-devel-0.96-2.el6_0.1.s390.rpm
polkit-devel-0.96-2.el6_0.1.s390x.rpm
polkit-docs-0.96-2.el6_0.1.s390x.rpm

x86_64:
polkit-0.96-2.el6_0.1.i686.rpm
polkit-0.96-2.el6_0.1.x86_64.rpm
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.x86_64.rpm
polkit-devel-0.96-2.el6_0.1.i686.rpm
polkit-devel-0.96-2.el6_0.1.x86_64.rpm
polkit-docs-0.96-2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/polkit-0.96-2.el6_0.1.src.rpm

i386:
polkit-0.96-2.el6_0.1.i686.rpm
polkit-debuginfo-0.96-2.el6_0.1.i686.rpm
polkit-devel-0.96-2.el6_0.1.i686.rpm
polkit-docs-0.96-2.el6_0.1.i686.rpm

noarch:
polkit-desktop-policy-0.96-2.el6_0.1.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-2011-1485.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

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[RedHat] Schwachstelle in PolicyKit - RHSA-2011:0455-01

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[RedHat] Schwachstelle in PolicyKit – RHSA-2011:0455-01

[RedHat] Schwachstelle in PolicyKit - RHSA-2011:0455-01