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Category:   Application (Web Server/CGI)  >   Apache Vendors:   Apache Software Foundation
(Red Hat Issues Fix) Apache Input Validation Hole in Mod_AutoIndex When the Character Set is Undefined May Permit Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1019202
SecurityTracker URL:  http://securitytracker.com/id/1019202
CVE Reference:   CVE-2007-4465   (Links to External Site)
Date:  Jan 16 2008
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.0.61, 2.2.6
Description:   A vulnerability was reported in Apache. A remote user can conduct cross-site scripting attacks.

A remote user can create a specially crafted request that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Apache software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Pages that are server-generated and do not have a character set defined may be affected.

Browsers that do not properly implement RFC2616 may be affected.

The original advisory is available at:

http://securityreason.com/securityalert/3113

Maksymilian Arciemowicz of SecurityReason reported this vulnerability in September 2007.
Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Apache software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0005.html
Vendor URL:  httpd.apache.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Jan 16 2008 Apache Input Validation Hole in Mod_AutoIndex When the Character Set is Undefined May Permit Cross-Site Scripting Attacks


 Source Message Contents
Date:  Tue, 15 Jan 2008 04:18:42 -0500
Subject:  [RHSA-2008:0005-01] Moderate: httpd security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis:          Moderate: httpd security update
Advisory ID:       RHSA-2008:0005-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0005.html
Issue date:        2008-01-15
CVE Names:         CVE-2007-3847 CVE-2007-4465 CVE-2007-5000 
                   CVE-2007-6388 CVE-2008-0005 
=====================================================================

1. Summary:

Updated Apache httpd packages that fix several security issues are now
available for Red Hat Enterprise Linux 3.

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 AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Description:

The Apache HTTP Server is a popular Web server.

A flaw was found in the mod_imap module. On sites where mod_imap was
enabled and an imagemap file was publicly available, a cross-site scripting
attack was possible. (CVE-2007-5000)

A flaw was found in the mod_autoindex module. On sites where directory
listings are used, and the "AddDefaultCharset" directive has been removed
from the configuration, a cross-site scripting attack was possible against
Web browsers which did not correctly derive the response character set
following the rules in RFC 2616. (CVE-2007-4465)

A flaw was found in the mod_proxy module. On sites where a reverse proxy is
configured, a remote attacker could send a carefully crafted request that
would cause the Apache child process handling that request to crash. On
sites where a forward proxy is configured, an attacker could cause a
similar crash if a user could be persuaded to visit a malicious site using
the proxy. This could lead to a denial of service if using a threaded
Multi-Processing Module. (CVE-2007-3847) 

A flaw was found in the mod_status module. On sites where mod_status was
enabled and the status pages were publicly available, a cross-site
scripting attack was possible. (CVE-2007-6388)

A flaw was found in the mod_proxy_ftp module. On sites where mod_proxy_ftp
was enabled and a forward proxy was configured, a cross-site scripting
attack was possible against Web browsers which did not correctly derive the
response character set following the rules in RFC 2616. (CVE-2008-0005)

Users of Apache httpd should upgrade to these updated packages, which
contain backported patches to resolve these issues. Users should restart
httpd after installing this update.

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/FAQ_58_10188

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

250731 - CVE-2007-3847 httpd out of bounds read
289511 - CVE-2007-4465 mod_autoindex XSS
419931 - CVE-2007-5000 mod_imagemap XSS
427228 - CVE-2007-6388 apache mod_status cross-site scripting
427739 - CVE-2008-0005 mod_proxy_ftp XSS

6. Package List:

Red Hat Enterprise Linux AS version 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/httpd-2.0.46-70.ent.src.rpm

i386:
httpd-2.0.46-70.ent.i386.rpm
httpd-debuginfo-2.0.46-70.ent.i386.rpm
httpd-devel-2.0.46-70.ent.i386.rpm
mod_ssl-2.0.46-70.ent.i386.rpm

ia64:
httpd-2.0.46-70.ent.ia64.rpm
httpd-debuginfo-2.0.46-70.ent.ia64.rpm
httpd-devel-2.0.46-70.ent.ia64.rpm
mod_ssl-2.0.46-70.ent.ia64.rpm

ppc:
httpd-2.0.46-70.ent.ppc.rpm
httpd-debuginfo-2.0.46-70.ent.ppc.rpm
httpd-devel-2.0.46-70.ent.ppc.rpm
mod_ssl-2.0.46-70.ent.ppc.rpm

s390:
httpd-2.0.46-70.ent.s390.rpm
httpd-debuginfo-2.0.46-70.ent.s390.rpm
httpd-devel-2.0.46-70.ent.s390.rpm
mod_ssl-2.0.46-70.ent.s390.rpm

s390x:
httpd-2.0.46-70.ent.s390x.rpm
httpd-debuginfo-2.0.46-70.ent.s390x.rpm
httpd-devel-2.0.46-70.ent.s390x.rpm
mod_ssl-2.0.46-70.ent.s390x.rpm

x86_64:
httpd-2.0.46-70.ent.x86_64.rpm
httpd-debuginfo-2.0.46-70.ent.x86_64.rpm
httpd-devel-2.0.46-70.ent.x86_64.rpm
mod_ssl-2.0.46-70.ent.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/httpd-2.0.46-70.ent.src.rpm

i386:
httpd-2.0.46-70.ent.i386.rpm
httpd-debuginfo-2.0.46-70.ent.i386.rpm
httpd-devel-2.0.46-70.ent.i386.rpm
mod_ssl-2.0.46-70.ent.i386.rpm

x86_64:
httpd-2.0.46-70.ent.x86_64.rpm
httpd-debuginfo-2.0.46-70.ent.x86_64.rpm
httpd-devel-2.0.46-70.ent.x86_64.rpm
mod_ssl-2.0.46-70.ent.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/httpd-2.0.46-70.ent.src.rpm

i386:
httpd-2.0.46-70.ent.i386.rpm
httpd-debuginfo-2.0.46-70.ent.i386.rpm
httpd-devel-2.0.46-70.ent.i386.rpm
mod_ssl-2.0.46-70.ent.i386.rpm

ia64:
httpd-2.0.46-70.ent.ia64.rpm
httpd-debuginfo-2.0.46-70.ent.ia64.rpm
httpd-devel-2.0.46-70.ent.ia64.rpm
mod_ssl-2.0.46-70.ent.ia64.rpm

x86_64:
httpd-2.0.46-70.ent.x86_64.rpm
httpd-debuginfo-2.0.46-70.ent.x86_64.rpm
httpd-devel-2.0.46-70.ent.x86_64.rpm
mod_ssl-2.0.46-70.ent.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/httpd-2.0.46-70.ent.src.rpm

i386:
httpd-2.0.46-70.ent.i386.rpm
httpd-debuginfo-2.0.46-70.ent.i386.rpm
httpd-devel-2.0.46-70.ent.i386.rpm
mod_ssl-2.0.46-70.ent.i386.rpm

ia64:
httpd-2.0.46-70.ent.ia64.rpm
httpd-debuginfo-2.0.46-70.ent.ia64.rpm
httpd-devel-2.0.46-70.ent.ia64.rpm
mod_ssl-2.0.46-70.ent.ia64.rpm

x86_64:
httpd-2.0.46-70.ent.x86_64.rpm
httpd-debuginfo-2.0.46-70.ent.x86_64.rpm
httpd-devel-2.0.46-70.ent.x86_64.rpm
mod_ssl-2.0.46-70.ent.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-2007-3847
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4465
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5000
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6388
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0005
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 2008 Red Hat, Inc.
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