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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.
CVE-2011-3192 – Denial of Service-Schwachstelle in Apache
Im Apache HTTP Server Version 1.3.x bzw. 2.0.x bis 2.0.64 und 2.2.x bis
Version 2.2.10 besteht ein Fehler bei der Verarbeitung des HTTP-Header
Feldes “Range”, mit dem Teile eines Dokumentes vom Webserver angefordert
werden koennen. Ein entfernter Angreifer kann dies ausnutzen, um durch
Senden verschiedener Werte fuer das Range-Feld, die sich ueberschneiden
und in einer unsortierten Reihenfolge abgeschickt werden, eine sehr hohe
Speicher- und CPU-Auslastung erzeugen, welche den Webserver zum Absturz
oder zum Stillstand bringen kann.
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket httpd
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x,
x86_64
Red Hat Enterprise Linux (v. 5.3.LL server) – i386, ia64, x86_64
Red Hat Enterprise Linux Server (v. 6.0.z) – i386, noarch, ppc64,
s390x, 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,
Detlev O. Matthies
– —
Detlev O. Matthies, 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: httpd security update
Advisory ID: RHSA-2011:1294-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1294.html
Issue date: 2011-09-14
CVE Names: CVE-2011-3192
=====================================================================
1. Summary:
Updated httpd packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.3 Long Life, 5.6 Extended Update Support, and
6.0 Extended Update Support.
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, ppc, s390x, x86_64
Red Hat Enterprise Linux (v. 5.3.LL server) – i386, ia64, x86_64
Red Hat Enterprise Linux Server (v. 6.0.z) – i386, noarch, ppc64, s390x, x86_64
3. Description:
The Apache HTTP Server is a popular web server.
A flaw was found in the way the Apache HTTP Server handled Range HTTP
headers. A remote attacker could use this flaw to cause httpd to use an
excessive amount of memory and CPU time via HTTP requests with a
specially-crafted Range header. (CVE-2011-3192)
All httpd users should upgrade to these updated packages, which contain a
backported patch to correct this issue. After installing the updated
packages, the httpd daemon must be restarted for the 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/):
732928 – CVE-2011-3192 httpd: multiple ranges DoS
6. Package List:
Red Hat Enterprise Linux (v. 5.3.LL server):
Source:
httpd-2.2.3-22.el5_3.3.src.rpm
i386:
httpd-2.2.3-22.el5_3.3.i386.rpm
httpd-debuginfo-2.2.3-22.el5_3.3.i386.rpm
httpd-devel-2.2.3-22.el5_3.3.i386.rpm
httpd-manual-2.2.3-22.el5_3.3.i386.rpm
mod_ssl-2.2.3-22.el5_3.3.i386.rpm
ia64:
httpd-2.2.3-22.el5_3.3.ia64.rpm
httpd-debuginfo-2.2.3-22.el5_3.3.ia64.rpm
httpd-devel-2.2.3-22.el5_3.3.ia64.rpm
httpd-manual-2.2.3-22.el5_3.3.ia64.rpm
mod_ssl-2.2.3-22.el5_3.3.ia64.rpm
x86_64:
httpd-2.2.3-22.el5_3.3.x86_64.rpm
httpd-debuginfo-2.2.3-22.el5_3.3.i386.rpm
httpd-debuginfo-2.2.3-22.el5_3.3.x86_64.rpm
httpd-devel-2.2.3-22.el5_3.3.i386.rpm
httpd-devel-2.2.3-22.el5_3.3.x86_64.rpm
httpd-manual-2.2.3-22.el5_3.3.x86_64.rpm
mod_ssl-2.2.3-22.el5_3.3.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
httpd-2.2.3-45.el5_6.2.src.rpm
i386:
httpd-2.2.3-45.el5_6.2.i386.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.i386.rpm
httpd-devel-2.2.3-45.el5_6.2.i386.rpm
httpd-manual-2.2.3-45.el5_6.2.i386.rpm
mod_ssl-2.2.3-45.el5_6.2.i386.rpm
ia64:
httpd-2.2.3-45.el5_6.2.ia64.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.ia64.rpm
httpd-devel-2.2.3-45.el5_6.2.ia64.rpm
httpd-manual-2.2.3-45.el5_6.2.ia64.rpm
mod_ssl-2.2.3-45.el5_6.2.ia64.rpm
ppc:
httpd-2.2.3-45.el5_6.2.ppc.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.ppc.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.ppc64.rpm
httpd-devel-2.2.3-45.el5_6.2.ppc.rpm
httpd-devel-2.2.3-45.el5_6.2.ppc64.rpm
httpd-manual-2.2.3-45.el5_6.2.ppc.rpm
mod_ssl-2.2.3-45.el5_6.2.ppc.rpm
s390x:
httpd-2.2.3-45.el5_6.2.s390x.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.s390.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.s390x.rpm
httpd-devel-2.2.3-45.el5_6.2.s390.rpm
httpd-devel-2.2.3-45.el5_6.2.s390x.rpm
httpd-manual-2.2.3-45.el5_6.2.s390x.rpm
mod_ssl-2.2.3-45.el5_6.2.s390x.rpm
x86_64:
httpd-2.2.3-45.el5_6.2.x86_64.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.i386.rpm
httpd-debuginfo-2.2.3-45.el5_6.2.x86_64.rpm
httpd-devel-2.2.3-45.el5_6.2.i386.rpm
httpd-devel-2.2.3-45.el5_6.2.x86_64.rpm
httpd-manual-2.2.3-45.el5_6.2.x86_64.rpm
mod_ssl-2.2.3-45.el5_6.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6.0.z):
Source:
httpd-2.2.15-5.el6_0.1.src.rpm
i386:
httpd-2.2.15-5.el6_0.1.i686.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.i686.rpm
httpd-devel-2.2.15-5.el6_0.1.i686.rpm
httpd-tools-2.2.15-5.el6_0.1.i686.rpm
mod_ssl-2.2.15-5.el6_0.1.i686.rpm
noarch:
httpd-manual-2.2.15-5.el6_0.1.noarch.rpm
ppc64:
httpd-2.2.15-5.el6_0.1.ppc64.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.ppc.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.ppc64.rpm
httpd-devel-2.2.15-5.el6_0.1.ppc.rpm
httpd-devel-2.2.15-5.el6_0.1.ppc64.rpm
httpd-tools-2.2.15-5.el6_0.1.ppc64.rpm
mod_ssl-2.2.15-5.el6_0.1.ppc64.rpm
s390x:
httpd-2.2.15-5.el6_0.1.s390x.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.s390.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.s390x.rpm
httpd-devel-2.2.15-5.el6_0.1.s390.rpm
httpd-devel-2.2.15-5.el6_0.1.s390x.rpm
httpd-tools-2.2.15-5.el6_0.1.s390x.rpm
mod_ssl-2.2.15-5.el6_0.1.s390x.rpm
x86_64:
httpd-2.2.15-5.el6_0.1.x86_64.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.i686.rpm
httpd-debuginfo-2.2.15-5.el6_0.1.x86_64.rpm
httpd-devel-2.2.15-5.el6_0.1.i686.rpm
httpd-devel-2.2.15-5.el6_0.1.x86_64.rpm
httpd-tools-2.2.15-5.el6_0.1.x86_64.rpm
mod_ssl-2.2.15-5.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-2011-3192.html
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is
details at https://access.redhat.com/security/team/contact/
Copyright 2011 Red Hat, Inc.
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