Nadogradnja jezgre operacijskog sustava Red Hat Enterprise Linux 5 ispravila je sigurnosni propust koji je zlonamjernim korisnicima omogućavao stjecanje većih privilegija ili rušenje sustava.
Paket:
Linux kernel 2.6.x
Operacijski sustavi:
Red Hat Enterprise Linux 2.1, Red Hat Enterprise Linux 3, Red Hat Enterprise Linux 4, Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6
Problem:
pogreška u programskoj funkciji
Iskorištavanje:
lokalno/udaljeno
Posljedica:
dobivanje većih privilegija, uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-2136
Izvorni ID preporuke:
RHSA-2012:0690-01
Izvor:
Red Hat
Problem:
Ranjivost se javlja zbog pogrešaka u programskoj funkciji "sock_alloc_send_pskb()" koja je nepravilno provjeravla parametar "data_len".
Posljedica:
Napadač bi mogao iskoristiti propust za izvođenje DoS napada te stjecanje povećanih privilegija.
Rješenje:
Svim se korisnicima savjetuje instalacija nadogradnje.
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2012:0690-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0690.html
Issue date: 2012-05-29
CVE Names: CVE-2012-2136
=====================================================================
1. Summary:
Updated kernel packages that fix one security issue and various bugs are
now available for Red Hat Enterprise Linux 5.
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 (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issue:
* It was found that the data_len parameter of the sock_alloc_send_pskb()
function in the Linux kernel's networking implementation was not validated
before use. A local user with access to a TUN/TAP virtual interface could
use this flaw to crash the system or, potentially, escalate their
privileges. Note that unprivileged users cannot access TUN/TAP devices
until the root user grants them access. (CVE-2012-2136, Important)
This update also fixes various bugs. Documentation for these changes will
be available shortly from the Technical Notes document linked to in the
References section.
Users should upgrade to these updated packages, which contain backported
patches to correct this issue, and fix the bugs noted in the Technical
Notes. 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/knowledge/articles/11258
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
5. Bugs fixed (http://bugzilla.redhat.com/):
816289 - CVE-2012-2136 kernel: net: insufficient data_len validation in
sock_alloc_send_pskb()
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-308.8.1.el5.src.rpm
i386:
kernel-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.i686.rpm
kernel-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-headers-2.6.18-308.8.1.el5.i386.rpm
kernel-xen-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.i686.rpm
noarch:
kernel-doc-2.6.18-308.8.1.el5.noarch.rpm
x86_64:
kernel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.x86_64.rpm
kernel-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-headers-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-308.8.1.el5.src.rpm
i386:
kernel-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.i686.rpm
kernel-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-headers-2.6.18-308.8.1.el5.i386.rpm
kernel-xen-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.i686.rpm
ia64:
kernel-2.6.18-308.8.1.el5.ia64.rpm
kernel-debug-2.6.18-308.8.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.ia64.rpm
kernel-devel-2.6.18-308.8.1.el5.ia64.rpm
kernel-headers-2.6.18-308.8.1.el5.ia64.rpm
kernel-xen-2.6.18-308.8.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.ia64.rpm
noarch:
kernel-doc-2.6.18-308.8.1.el5.noarch.rpm
ppc:
kernel-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debug-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.ppc64.rpm
kernel-devel-2.6.18-308.8.1.el5.ppc64.rpm
kernel-headers-2.6.18-308.8.1.el5.ppc.rpm
kernel-headers-2.6.18-308.8.1.el5.ppc64.rpm
kernel-kdump-2.6.18-308.8.1.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-308.8.1.el5.ppc64.rpm
s390x:
kernel-2.6.18-308.8.1.el5.s390x.rpm
kernel-debug-2.6.18-308.8.1.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.s390x.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.s390x.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.s390x.rpm
kernel-devel-2.6.18-308.8.1.el5.s390x.rpm
kernel-headers-2.6.18-308.8.1.el5.s390x.rpm
kernel-kdump-2.6.18-308.8.1.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-308.8.1.el5.s390x.rpm
kernel-kdump-devel-2.6.18-308.8.1.el5.s390x.rpm
x86_64:
kernel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.x86_64.rpm
kernel-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-headers-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-308.8.1.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-2012-2136.html
https://access.redhat.com/security/updates/classification/#important
https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.8_Technical_Notes/kernel.html#RHSA-2012-0690
8. Contact:
The Red Hat security contact is <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2012 Red Hat, Inc.
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