AusCERT - ESB-2011.0945 - [RedHat] httpd: Denial of service

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ESB-2011.0945 - [RedHat] httpd: Denial of service - Remote/unauthenticated
Date: 15 September 2011
References: ESB-2011.0870.2 ESB-2011.0896 ESB-2011.0950 ESB-2011.0966 ESB-2011.0967 ESB-2011.1039

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0945
                     Important: httpd security update
                             15 September 2011

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           httpd
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 5
                   Red Hat Enterprise Linux Server 6
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-3192  

Reference:         ESB-2011.0896
                   ESB-2011.0870.2

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2011-1294.html

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

Copyright 2011 Red Hat, Inc.
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