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

Synopsis:          Important: httpd security update
Advisory ID:       RHSA-2009:1156-01
Product:           Red Hat Application Stack
Advisory URL:      https://access.redhat.com/errata/RHSA-2009:1156.html
Issue date:        2009-07-14
CVE Names:         CVE-2009-1195 CVE-2009-1890 CVE-2009-1891 
====================================================================
1. Summary:

Updated httpd packages that fix multiple security issues are now available
for Red Hat Application Stack v2.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Application Stack v2 for Enterprise Linux (v.5) - i386, x86_64

3. Description:

The Apache HTTP Server is a popular Web server.

A denial of service flaw was found in the Apache mod_proxy module when it
was used as a reverse proxy. A remote attacker could use this flaw to force
a proxy process to consume large amounts of CPU time. (CVE-2009-1890)

A denial of service flaw was found in the Apache mod_deflate module. This
module continued to compress large files until compression was complete,
even if the network connection that requested the content was closed before
compression completed. This would cause mod_deflate to consume large
amounts of CPU if mod_deflate was enabled for a large file. (CVE-2009-1891)

A flaw was found in the handling of the "Options" and "AllowOverride"
directives used by the Apache HTTP Server. In configurations using the
"AllowOverride" directive with certain "Options=" arguments, local userswere not restricted from executing commands from a Server-Side-Include
script as intended. (CVE-2009-1195)

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 that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at

5. Bugs fixed (http://bugzilla.redhat.com/):

489436 - CVE-2009-1195 AllowOverride Options=IncludesNoExec allows Options Includes
509125 - CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in mod_deflate
509375 - CVE-2009-1890 httpd: mod_proxy reverse proxy DoS (infinite loop)

6. Package List:

Red Hat Application Stack v2 for Enterprise Linux (v.5):

Source:

i386:
httpd-2.2.11-3.el5s2.i386.rpm
httpd-debuginfo-2.2.11-3.el5s2.i386.rpm
httpd-devel-2.2.11-3.el5s2.i386.rpm
httpd-manual-2.2.11-3.el5s2.i386.rpm
mod_ssl-2.2.11-3.el5s2.i386.rpm

x86_64:
httpd-2.2.11-3.el5s2.x86_64.rpm
httpd-debuginfo-2.2.11-3.el5s2.i386.rpm
httpd-debuginfo-2.2.11-3.el5s2.x86_64.rpm
httpd-devel-2.2.11-3.el5s2.i386.rpm
httpd-devel-2.2.11-3.el5s2.x86_64.rpm
httpd-manual-2.2.11-3.el5s2.x86_64.rpm
mod_ssl-2.2.11-3.el5s2.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1195
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1890
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1891
http://www.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/

Copyright 2009 Red Hat, Inc.
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RedHat: RHSA-2009-1156:01 Important: httpd security update

Updated httpd packages that fix multiple security issues are now available for Red Hat Application Stack v2

Summary

The Apache HTTP Server is a popular Web server.
A denial of service flaw was found in the Apache mod_proxy module when it was used as a reverse proxy. A remote attacker could use this flaw to force a proxy process to consume large amounts of CPU time. (CVE-2009-1890)
A denial of service flaw was found in the Apache mod_deflate module. This module continued to compress large files until compression was complete, even if the network connection that requested the content was closed before compression completed. This would cause mod_deflate to consume large amounts of CPU if mod_deflate was enabled for a large file. (CVE-2009-1891)
A flaw was found in the handling of the "Options" and "AllowOverride" directives used by the Apache HTTP Server. In configurations using the "AllowOverride" directive with certain "Options=" arguments, local userswere not restricted from executing commands from a Server-Side-Include script as intended. (CVE-2009-1195)
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.



Summary


Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1195 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1890 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1891 http://www.redhat.com/security/updates/classification/#important

Package List

Red Hat Application Stack v2 for Enterprise Linux (v.5):
Source:
i386: httpd-2.2.11-3.el5s2.i386.rpm httpd-debuginfo-2.2.11-3.el5s2.i386.rpm httpd-devel-2.2.11-3.el5s2.i386.rpm httpd-manual-2.2.11-3.el5s2.i386.rpm mod_ssl-2.2.11-3.el5s2.i386.rpm
x86_64: httpd-2.2.11-3.el5s2.x86_64.rpm httpd-debuginfo-2.2.11-3.el5s2.i386.rpm httpd-debuginfo-2.2.11-3.el5s2.x86_64.rpm httpd-devel-2.2.11-3.el5s2.i386.rpm httpd-devel-2.2.11-3.el5s2.x86_64.rpm httpd-manual-2.2.11-3.el5s2.x86_64.rpm mod_ssl-2.2.11-3.el5s2.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://www.redhat.com/security/team/key/#package


Severity
Advisory ID: RHSA-2009:1156-01
Product: Red Hat Application Stack
Advisory URL: https://access.redhat.com/errata/RHSA-2009:1156.html
Issued Date: : 2009-07-14
CVE Names: CVE-2009-1195 CVE-2009-1890 CVE-2009-1891

Topic

Updated httpd packages that fix multiple security issues are now availablefor Red Hat Application Stack v2.This update has been rated as having important security impact by the RedHat Security Response Team.


Topic


 

Relevant Releases Architectures

Red Hat Application Stack v2 for Enterprise Linux (v.5) - i386, x86_64


Bugs Fixed

489436 - CVE-2009-1195 AllowOverride Options=IncludesNoExec allows Options Includes

509125 - CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in mod_deflate

509375 - CVE-2009-1890 httpd: mod_proxy reverse proxy DoS (infinite loop)


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