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Red Hat Security Advisory 2011-1392-01

Red Hat Security Advisory 2011-1392-01
Posted Oct 20, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-1392-01 - The Apache HTTP Server is a popular web server. It was discovered that the Apache HTTP Server did not properly validate the request URI for proxied requests. In certain configurations, if a reverse proxy used the ProxyPassMatch directive, or if it used the RewriteRule directive with the proxy flag, a remote attacker could make the proxy connect to an arbitrary server, possibly disclosing sensitive information from internal web servers not directly accessible to the attacker.

tags | advisory, remote, web, arbitrary
systems | linux, redhat
advisories | CVE-2011-3368
SHA-256 | 38d5d3cdd137a8ddd27f61f26b4d6bd80a8be345b51f7fcd45471eb5bb0f29ba

Red Hat Security Advisory 2011-1392-01

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

Synopsis: Moderate: httpd security and bug fix update
Advisory ID: RHSA-2011:1392-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1392.html
Issue date: 2011-10-20
CVE Names: CVE-2011-3368
=====================================================================

1. Summary:

Updated httpd packages that fix one security issue and one bug are now
available for Red Hat Enterprise Linux 4 and 5.

The Red Hat Security Response Team has rated this update as having moderate
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:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

The Apache HTTP Server is a popular web server.

It was discovered that the Apache HTTP Server did not properly validate the
request URI for proxied requests. In certain configurations, if a reverse
proxy used the ProxyPassMatch directive, or if it used the RewriteRule
directive with the proxy flag, a remote attacker could make the proxy
connect to an arbitrary server, possibly disclosing sensitive information
from internal web servers not directly accessible to the attacker.
(CVE-2011-3368)

Red Hat would like to thank Context Information Security for reporting this
issue.

This update also fixes the following bug:

* The fix for CVE-2011-3192 provided by the RHSA-2011:1245 update
introduced regressions in the way httpd handled certain Range HTTP header
values. This update corrects those regressions. (BZ#736593, BZ#736594)

All httpd users should upgrade to these updated packages, which contain
backported patches to correct these issues. 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/):

736593 - httpd: RHSA-2011:1245 regressions [rhel-5]
736594 - httpd: RHSA-2011:1245 regressions [rhel-4]
740045 - CVE-2011-3368 httpd: reverse web proxy vulnerability

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/httpd-2.0.52-49.ent.src.rpm

i386:
httpd-2.0.52-49.ent.i386.rpm
httpd-debuginfo-2.0.52-49.ent.i386.rpm
httpd-devel-2.0.52-49.ent.i386.rpm
httpd-manual-2.0.52-49.ent.i386.rpm
httpd-suexec-2.0.52-49.ent.i386.rpm
mod_ssl-2.0.52-49.ent.i386.rpm

ia64:
httpd-2.0.52-49.ent.ia64.rpm
httpd-debuginfo-2.0.52-49.ent.ia64.rpm
httpd-devel-2.0.52-49.ent.ia64.rpm
httpd-manual-2.0.52-49.ent.ia64.rpm
httpd-suexec-2.0.52-49.ent.ia64.rpm
mod_ssl-2.0.52-49.ent.ia64.rpm

ppc:
httpd-2.0.52-49.ent.ppc.rpm
httpd-debuginfo-2.0.52-49.ent.ppc.rpm
httpd-devel-2.0.52-49.ent.ppc.rpm
httpd-manual-2.0.52-49.ent.ppc.rpm
httpd-suexec-2.0.52-49.ent.ppc.rpm
mod_ssl-2.0.52-49.ent.ppc.rpm

s390:
httpd-2.0.52-49.ent.s390.rpm
httpd-debuginfo-2.0.52-49.ent.s390.rpm
httpd-devel-2.0.52-49.ent.s390.rpm
httpd-manual-2.0.52-49.ent.s390.rpm
httpd-suexec-2.0.52-49.ent.s390.rpm
mod_ssl-2.0.52-49.ent.s390.rpm

s390x:
httpd-2.0.52-49.ent.s390x.rpm
httpd-debuginfo-2.0.52-49.ent.s390x.rpm
httpd-devel-2.0.52-49.ent.s390x.rpm
httpd-manual-2.0.52-49.ent.s390x.rpm
httpd-suexec-2.0.52-49.ent.s390x.rpm
mod_ssl-2.0.52-49.ent.s390x.rpm

x86_64:
httpd-2.0.52-49.ent.x86_64.rpm
httpd-debuginfo-2.0.52-49.ent.x86_64.rpm
httpd-devel-2.0.52-49.ent.x86_64.rpm
httpd-manual-2.0.52-49.ent.x86_64.rpm
httpd-suexec-2.0.52-49.ent.x86_64.rpm
mod_ssl-2.0.52-49.ent.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/httpd-2.0.52-49.ent.src.rpm

i386:
httpd-2.0.52-49.ent.i386.rpm
httpd-debuginfo-2.0.52-49.ent.i386.rpm
httpd-devel-2.0.52-49.ent.i386.rpm
httpd-manual-2.0.52-49.ent.i386.rpm
httpd-suexec-2.0.52-49.ent.i386.rpm
mod_ssl-2.0.52-49.ent.i386.rpm

x86_64:
httpd-2.0.52-49.ent.x86_64.rpm
httpd-debuginfo-2.0.52-49.ent.x86_64.rpm
httpd-devel-2.0.52-49.ent.x86_64.rpm
httpd-manual-2.0.52-49.ent.x86_64.rpm
httpd-suexec-2.0.52-49.ent.x86_64.rpm
mod_ssl-2.0.52-49.ent.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/httpd-2.0.52-49.ent.src.rpm

i386:
httpd-2.0.52-49.ent.i386.rpm
httpd-debuginfo-2.0.52-49.ent.i386.rpm
httpd-devel-2.0.52-49.ent.i386.rpm
httpd-manual-2.0.52-49.ent.i386.rpm
httpd-suexec-2.0.52-49.ent.i386.rpm
mod_ssl-2.0.52-49.ent.i386.rpm

ia64:
httpd-2.0.52-49.ent.ia64.rpm
httpd-debuginfo-2.0.52-49.ent.ia64.rpm
httpd-devel-2.0.52-49.ent.ia64.rpm
httpd-manual-2.0.52-49.ent.ia64.rpm
httpd-suexec-2.0.52-49.ent.ia64.rpm
mod_ssl-2.0.52-49.ent.ia64.rpm

x86_64:
httpd-2.0.52-49.ent.x86_64.rpm
httpd-debuginfo-2.0.52-49.ent.x86_64.rpm
httpd-devel-2.0.52-49.ent.x86_64.rpm
httpd-manual-2.0.52-49.ent.x86_64.rpm
httpd-suexec-2.0.52-49.ent.x86_64.rpm
mod_ssl-2.0.52-49.ent.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/httpd-2.0.52-49.ent.src.rpm

i386:
httpd-2.0.52-49.ent.i386.rpm
httpd-debuginfo-2.0.52-49.ent.i386.rpm
httpd-devel-2.0.52-49.ent.i386.rpm
httpd-manual-2.0.52-49.ent.i386.rpm
httpd-suexec-2.0.52-49.ent.i386.rpm
mod_ssl-2.0.52-49.ent.i386.rpm

ia64:
httpd-2.0.52-49.ent.ia64.rpm
httpd-debuginfo-2.0.52-49.ent.ia64.rpm
httpd-devel-2.0.52-49.ent.ia64.rpm
httpd-manual-2.0.52-49.ent.ia64.rpm
httpd-suexec-2.0.52-49.ent.ia64.rpm
mod_ssl-2.0.52-49.ent.ia64.rpm

x86_64:
httpd-2.0.52-49.ent.x86_64.rpm
httpd-debuginfo-2.0.52-49.ent.x86_64.rpm
httpd-devel-2.0.52-49.ent.x86_64.rpm
httpd-manual-2.0.52-49.ent.x86_64.rpm
httpd-suexec-2.0.52-49.ent.x86_64.rpm
mod_ssl-2.0.52-49.ent.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/httpd-2.2.3-53.el5_7.3.src.rpm

i386:
httpd-2.2.3-53.el5_7.3.i386.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.i386.rpm
mod_ssl-2.2.3-53.el5_7.3.i386.rpm

x86_64:
httpd-2.2.3-53.el5_7.3.x86_64.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.x86_64.rpm
mod_ssl-2.2.3-53.el5_7.3.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/httpd-2.2.3-53.el5_7.3.src.rpm

i386:
httpd-debuginfo-2.2.3-53.el5_7.3.i386.rpm
httpd-devel-2.2.3-53.el5_7.3.i386.rpm
httpd-manual-2.2.3-53.el5_7.3.i386.rpm

x86_64:
httpd-debuginfo-2.2.3-53.el5_7.3.i386.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.x86_64.rpm
httpd-devel-2.2.3-53.el5_7.3.i386.rpm
httpd-devel-2.2.3-53.el5_7.3.x86_64.rpm
httpd-manual-2.2.3-53.el5_7.3.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/httpd-2.2.3-53.el5_7.3.src.rpm

i386:
httpd-2.2.3-53.el5_7.3.i386.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.i386.rpm
httpd-devel-2.2.3-53.el5_7.3.i386.rpm
httpd-manual-2.2.3-53.el5_7.3.i386.rpm
mod_ssl-2.2.3-53.el5_7.3.i386.rpm

ia64:
httpd-2.2.3-53.el5_7.3.ia64.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.ia64.rpm
httpd-devel-2.2.3-53.el5_7.3.ia64.rpm
httpd-manual-2.2.3-53.el5_7.3.ia64.rpm
mod_ssl-2.2.3-53.el5_7.3.ia64.rpm

ppc:
httpd-2.2.3-53.el5_7.3.ppc.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.ppc.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.ppc64.rpm
httpd-devel-2.2.3-53.el5_7.3.ppc.rpm
httpd-devel-2.2.3-53.el5_7.3.ppc64.rpm
httpd-manual-2.2.3-53.el5_7.3.ppc.rpm
mod_ssl-2.2.3-53.el5_7.3.ppc.rpm

s390x:
httpd-2.2.3-53.el5_7.3.s390x.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.s390.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.s390x.rpm
httpd-devel-2.2.3-53.el5_7.3.s390.rpm
httpd-devel-2.2.3-53.el5_7.3.s390x.rpm
httpd-manual-2.2.3-53.el5_7.3.s390x.rpm
mod_ssl-2.2.3-53.el5_7.3.s390x.rpm

x86_64:
httpd-2.2.3-53.el5_7.3.x86_64.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.i386.rpm
httpd-debuginfo-2.2.3-53.el5_7.3.x86_64.rpm
httpd-devel-2.2.3-53.el5_7.3.i386.rpm
httpd-devel-2.2.3-53.el5_7.3.x86_64.rpm
httpd-manual-2.2.3-53.el5_7.3.x86_64.rpm
mod_ssl-2.2.3-53.el5_7.3.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-2011-3368.html
https://access.redhat.com/security/updates/classification/#moderate
https://rhn.redhat.com/errata/RHSA-2011-1245.html

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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