[RedHat] Mehrere Schwachstellen in Libcgroup

—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1

Liebe Kolleginnen und Kollegen,

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

CVE-2011-1022 – Schwachstelle in Libcgroup

In der Funktion cgre_receive_netlink_msg() wird bei Netlink-Nachrichten
die Quelle nicht ausreichend geprueft. Das fuehrt dazu, dass ein lokaler
Angreifer mittels praeparierter Netlink-Nachrichten an den
cgrulesengd-Daemon die Moeglichkeit hat, Prozesse verschiedenen
Kontrollgruppen zuzuordnen, so dass diese Prozesse mehr Ressourcen
(Speicher, CPU) erhalten als beabsichtigt.

CVE-2011-1006 – Schwachstelle in Libcgroup

In der Funktion parse_cgroup_spec(), bei der Konvertierung von
Kontroller-Listen die vom Nutzer fuer einen speziellen Task erzeugt
wurden, ist es moeglich, dass ein Heap Overflow auftritt. Ein lokaler
Angreifer kann dies ausnutzen, um mittels einer speziell praeparierten
Liste hoehere Privilegien zu erlangen.

Betroffen sind die folgenden Software Pakete und Plattformen:

Paket libcgroup

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

– —–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1

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

Synopsis: Important: libcgroup security update
Advisory ID: RHSA-2011:0320-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0320.html
Issue date: 2011-03-03
CVE Names: CVE-2011-1006 CVE-2011-1022
=====================================================================

1. Summary:

Updated libcgroup packages that fix two security issues are now available
for Red Hat Enterprise Linux 6.

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

3. Description:

The libcgroup packages provide tools and libraries to control and monitor
control groups.

A heap-based buffer overflow flaw was found in the way libcgroup converted
a list of user-provided controllers for a particular task into an array of
strings. A local attacker could use this flaw to escalate their privileges
via a specially-crafted list of controllers. (CVE-2011-1006)

It was discovered that libcgroup did not properly check the origin of
Netlink messages. A local attacker could use this flaw to send crafted
Netlink messages to the cgrulesengd daemon, causing it to put processes
into one or more existing control groups, based on the attacker’s choosing,
possibly allowing the particular tasks to run with more resources (memory,
CPU, etc.) than originally intended. (CVE-2011-1022)

Red Hat would like to thank Nelson Elhage for reporting the CVE-2011-1006
issue.

All libcgroup users 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 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/):

678107 – CVE-2011-1006 libcgroup: Heap-based buffer overflow by converting list of controllers for given task into an array of strings
680409 – CVE-2011-1022 libcgroup: Uncheck origin of NETLINK messages

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libcgroup-0.36.1-6.el6_0.1.src.rpm

i386:
libcgroup-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm

x86_64:
libcgroup-0.36.1-6.el6_0.1.i686.rpm
libcgroup-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.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/libcgroup-0.36.1-6.el6_0.1.src.rpm

i386:
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-devel-0.36.1-6.el6_0.1.i686.rpm
libcgroup-pam-0.36.1-6.el6_0.1.i686.rpm

x86_64:
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-devel-0.36.1-6.el6_0.1.i686.rpm
libcgroup-devel-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-pam-0.36.1-6.el6_0.1.i686.rpm
libcgroup-pam-0.36.1-6.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/libcgroup-0.36.1-6.el6_0.1.src.rpm

x86_64:
libcgroup-0.36.1-6.el6_0.1.i686.rpm
libcgroup-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.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/libcgroup-0.36.1-6.el6_0.1.src.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libcgroup-0.36.1-6.el6_0.1.src.rpm

i386:
libcgroup-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-devel-0.36.1-6.el6_0.1.i686.rpm

ppc64:
libcgroup-0.36.1-6.el6_0.1.ppc.rpm
libcgroup-0.36.1-6.el6_0.1.ppc64.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.ppc.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.ppc64.rpm
libcgroup-devel-0.36.1-6.el6_0.1.ppc.rpm
libcgroup-devel-0.36.1-6.el6_0.1.ppc64.rpm

s390x:
libcgroup-0.36.1-6.el6_0.1.s390.rpm
libcgroup-0.36.1-6.el6_0.1.s390x.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.s390.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.s390x.rpm
libcgroup-devel-0.36.1-6.el6_0.1.s390.rpm
libcgroup-devel-0.36.1-6.el6_0.1.s390x.rpm

x86_64:
libcgroup-0.36.1-6.el6_0.1.i686.rpm
libcgroup-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-devel-0.36.1-6.el6_0.1.i686.rpm
libcgroup-devel-0.36.1-6.el6_0.1.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libcgroup-0.36.1-6.el6_0.1.src.rpm

i386:
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-pam-0.36.1-6.el6_0.1.i686.rpm

ppc64:
libcgroup-debuginfo-0.36.1-6.el6_0.1.ppc.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.ppc64.rpm
libcgroup-pam-0.36.1-6.el6_0.1.ppc.rpm
libcgroup-pam-0.36.1-6.el6_0.1.ppc64.rpm

s390x:
libcgroup-debuginfo-0.36.1-6.el6_0.1.s390.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.s390x.rpm
libcgroup-pam-0.36.1-6.el6_0.1.s390.rpm
libcgroup-pam-0.36.1-6.el6_0.1.s390x.rpm

x86_64:
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-pam-0.36.1-6.el6_0.1.i686.rpm
libcgroup-pam-0.36.1-6.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/libcgroup-0.36.1-6.el6_0.1.src.rpm

i386:
libcgroup-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-devel-0.36.1-6.el6_0.1.i686.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libcgroup-0.36.1-6.el6_0.1.src.rpm

i386:
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-pam-0.36.1-6.el6_0.1.i686.rpm

x86_64:
libcgroup-debuginfo-0.36.1-6.el6_0.1.i686.rpm
libcgroup-debuginfo-0.36.1-6.el6_0.1.x86_64.rpm
libcgroup-pam-0.36.1-6.el6_0.1.i686.rpm
libcgroup-pam-0.36.1-6.el6_0.1.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-2011-1006.html
https://www.redhat.com/security/data/cve/CVE-2011-1022.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is . More contact
details at https://www.redhat.com/security/team/contact/

iD8DBQFNcCHMXlSAg2UNWIIRAlJHAJ4jdJHFgOdID5ClOoqYG5km7wbejACgo8dC
Cck1v3Bb6tDhS5DZwM412k4=
=Ljik
– —–END PGP SIGNATURE—–
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v2.0.9 (GNU/Linux)

iQEcBAEBAgAGBQJNcPAhAAoJEJtyb8U7iGZBZlQH/R+qSdXAEz30SsuAzLX0p3fY
Q//GuOIokoKo1FhRB7vRdPrjwr2jgHV9MzDXnBn+2u3bAwttT8o6EBZoTdty+EcO
NjRnbtn7/DP476MFhfeuRkNGB8uHCHHj5m9F3c76ZurOXHrBIj3CcjvXlQoNyzku
BXNlMimrt3UzlCYFFRqY8mcuE71Ta6wVoIUcSw6917A2EO9UowSpQcd0AVOmA5Nv
5jz96fB+ggppEiRminTYyNzulv/lXvMOWovw1CEeX59AnXyovEAP4pSmlcLYqBvP
9d3NwdCwkex4jASZUgTTUA9Ifx/OGfdNwG6120oglp/Y/1OUfUg4wKwZA9CAnhk=
=MVyq
—–END PGP SIGNATURE—–

[RedHat] Mehrere Schwachstellen in Libcgroup - RHSA-2011:0320-01

LMP003 Chemnitzer Linux-Tage 2026

[RedHat] Mehrere Schwachstellen in Libcgroup – RHSA-2011:0320-01

[RedHat] Mehrere Schwachstellen in Libcgroup - RHSA-2011:0320-01