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Category:   Application (Web Server/CGI)  >   Apache HTTPD Vendors:   Apache Software Foundation
(Red Hat Issues Fix) Apache IncludesNoExec Options Restrictions Can Be Bypass By Local Users
SecurityTracker Alert ID:  1022297
SecurityTracker URL:  http://securitytracker.com/id/1022297
CVE Reference:   CVE-2009-1195   (Links to External Site)
Date:  May 27 2009
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.2.11
Description:   A vulnerability was reported in Apache. A local user can bypass security restrictions.

The "Options" and "AllowOverride" directives are not properly processed. A local user can enable Server Side Includes (SSI) even when the "IncludesNoEXEC" option is set.

If the system is configured with "AllowOverride Options=IncludesNoEXEC", a local user can place "Options Includes" in a '.htaccess' file to cause Server Side Includes to be enabled with exec privileges.

If the system is configured with "AllowOverride Options=IncludesNoEXEC" and with "Options IncludesNoExec" enabled in the same <Directory> context, a local user can place "Options +IncludesNoExec" in a '.htaccess' file to cause Server Side Includes to be enabled with exec privileges.

Jonathan Peatfield reported this vulnerability.

Impact:   A local user can enable Server Side Includes in certain cases when SSI execution should be prohibited.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2009-1075.html

Vendor URL:  httpd.apache.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
May 27 2009 Apache IncludesNoExec Options Restrictions Can Be Bypass By Local Users



 Source Message Contents

Subject:  [RHSA-2009:1075-01] Moderate: httpd security update


-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: httpd security update
Advisory ID:       RHSA-2009:1075-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-1075.html
Issue date:        2009-05-27
CVE Names:         CVE-2008-1678 CVE-2009-1195 
=====================================================================

1. Summary:

Updated httpd packages that fix two security issues are now available for
Red Hat Enterprise Linux 5.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

The Apache HTTP Server is a popular and freely-available Web server.

A flaw was found in the handling of compression structures between mod_ssl
and OpenSSL. If too many connections were opened in a short period of time,
all system memory and swap space would be consumed by httpd, negatively
impacting other processes, or causing a system crash. (CVE-2008-1678)

Note: The CVE-2008-1678 issue did not affect Red Hat Enterprise Linux 5
prior to 5.3. The problem was introduced via the RHBA-2009:0181 errata in
Red Hat Enterprise Linux 5.3, which upgraded OpenSSL to the newer 0.9.8e
version.

A flaw was found in the handling of the "Options" and "AllowOverride"
directives. In configurations using the "AllowOverride" directive with
certain "Options=" arguments, local users were 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 resolve these issues. Users must restart httpd for
this 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
http://kbase.redhat.com/faq/docs/DOC-11259

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

447268 - CVE-2008-1678 httpd: mod_ssl per-connection memory leak for connections with zlib compression
489436 - CVE-2009-1195 AllowOverride Options=IncludesNoExec allows Options Includes
497077 - memory leak in httpd

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/httpd-2.2.3-22.el5_3.1.src.rpm

i386:
httpd-2.2.3-22.el5_3.1.i386.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.i386.rpm
mod_ssl-2.2.3-22.el5_3.1.i386.rpm

x86_64:
httpd-2.2.3-22.el5_3.1.x86_64.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.x86_64.rpm
mod_ssl-2.2.3-22.el5_3.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/httpd-2.2.3-22.el5_3.1.src.rpm

i386:
httpd-debuginfo-2.2.3-22.el5_3.1.i386.rpm
httpd-devel-2.2.3-22.el5_3.1.i386.rpm
httpd-manual-2.2.3-22.el5_3.1.i386.rpm

x86_64:
httpd-debuginfo-2.2.3-22.el5_3.1.i386.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.x86_64.rpm
httpd-devel-2.2.3-22.el5_3.1.i386.rpm
httpd-devel-2.2.3-22.el5_3.1.x86_64.rpm
httpd-manual-2.2.3-22.el5_3.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/httpd-2.2.3-22.el5_3.1.src.rpm

i386:
httpd-2.2.3-22.el5_3.1.i386.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.i386.rpm
httpd-devel-2.2.3-22.el5_3.1.i386.rpm
httpd-manual-2.2.3-22.el5_3.1.i386.rpm
mod_ssl-2.2.3-22.el5_3.1.i386.rpm

ia64:
httpd-2.2.3-22.el5_3.1.ia64.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.ia64.rpm
httpd-devel-2.2.3-22.el5_3.1.ia64.rpm
httpd-manual-2.2.3-22.el5_3.1.ia64.rpm
mod_ssl-2.2.3-22.el5_3.1.ia64.rpm

ppc:
httpd-2.2.3-22.el5_3.1.ppc.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.ppc.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.ppc64.rpm
httpd-devel-2.2.3-22.el5_3.1.ppc.rpm
httpd-devel-2.2.3-22.el5_3.1.ppc64.rpm
httpd-manual-2.2.3-22.el5_3.1.ppc.rpm
mod_ssl-2.2.3-22.el5_3.1.ppc.rpm

s390x:
httpd-2.2.3-22.el5_3.1.s390x.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.s390.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.s390x.rpm
httpd-devel-2.2.3-22.el5_3.1.s390.rpm
httpd-devel-2.2.3-22.el5_3.1.s390x.rpm
httpd-manual-2.2.3-22.el5_3.1.s390x.rpm
mod_ssl-2.2.3-22.el5_3.1.s390x.rpm

x86_64:
httpd-2.2.3-22.el5_3.1.x86_64.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.i386.rpm
httpd-debuginfo-2.2.3-22.el5_3.1.x86_64.rpm
httpd-devel-2.2.3-22.el5_3.1.i386.rpm
httpd-devel-2.2.3-22.el5_3.1.x86_64.rpm
httpd-manual-2.2.3-22.el5_3.1.x86_64.rpm
mod_ssl-2.2.3-22.el5_3.1.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1678
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1195
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2009 Red Hat, Inc.
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