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Category:   Application (Web Server/CGI)  >   Apache Tomcat Vendors:   Apache Software Foundation
(Red Hat Issues Fix) Apache Tomcat Manager Input Validation Hole in 'sessionList.jsp' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1025556
SecurityTracker URL:  http://securitytracker.com/id/1025556
CVE Reference:   CVE-2010-4172   (Links to External Site)
Date:  May 20 2011
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  Exploit Included:  Yes  
Version(s): 6.0.12 to 6.0.29, 7.0.0 to 7.0.4
Description:   A vulnerability was reported in Apache Tomcat Manager. A remote user can conduct cross-site scripting attacks.

The Apache Tomcat Manager application not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL 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 Tomcat 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.

The 'orderBy' and 'sort request' parameters in the session list screen (sessionList.jsp) are affected.

A demonstration exploit request is provided:

GET /manager/html/sessions?path=/&sort="><script>alert('xss')</script>order=ASC&action=injectSessions&refresh=Refresh+Sessions+list

Versions 7.0.0 to 7.0.4 are not affected in the default configuration.

Adam Muntner of Gotham Digital Science reported this vulnerability.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Tomcat 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 issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2011-0791.html

Vendor URL:  tomcat.apache.org/security-7.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6

Message History:   This archive entry is a follow-up to the message listed below.
Nov 22 2010 Apache Tomcat Manager Input Validation Hole in 'sessionList.jsp' Permits Cross-Site Scripting Attacks



 Source Message Contents

Subject:  [RHSA-2011:0791-01] Moderate: tomcat6 security and bug fix update

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

Synopsis:          Moderate: tomcat6 security and bug fix update
Advisory ID:       RHSA-2011:0791-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-0791.html
Issue date:        2011-05-19
CVE Names:         CVE-2010-3718 CVE-2010-4172 CVE-2011-0013 
=====================================================================

1. Summary:

Updated tomcat6 packages that fix three security issues and several bugs
are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop Optional (v. 6) - noarch
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch
Red Hat Enterprise Linux Server (v. 6) - noarch
Red Hat Enterprise Linux Server Optional (v. 6) - noarch
Red Hat Enterprise Linux Workstation (v. 6) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch

3. Description:

Apache Tomcat is a servlet container for the Java Servlet and JavaServer
Pages (JSP) technologies.

It was found that web applications could modify the location of the Tomcat
host's work directory. As web applications deployed on Tomcat have read and
write access to this directory, a malicious web application could use this
flaw to trick Tomcat into giving it read and write access to an arbitrary
directory on the file system. (CVE-2010-3718)

A cross-site scripting (XSS) flaw was found in the Manager application,
used for managing web applications on Tomcat. If a remote attacker could
trick a user who is logged into the Manager application into visiting a
specially-crafted URL, the attacker could perform Manager application tasks
with the privileges of the logged in user. (CVE-2010-4172)

A second cross-site scripting (XSS) flaw was found in the Manager
application. A malicious web application could use this flaw to conduct an
XSS attack, leading to arbitrary web script execution with the privileges
of victims who are logged into and viewing Manager application web pages.
(CVE-2011-0013)

This update also fixes the following bugs:

* A bug in the "tomcat6" init script prevented additional Tomcat instances
from starting. As well, running "service tomcat6 start" caused
configuration options applied from "/etc/sysconfig/tomcat6" to be
overwritten with those from "/etc/tomcat6/tomcat6.conf". With this update,
multiple instances of Tomcat run as expected. (BZ#636997)

* The "/usr/share/java/" directory was missing a symbolic link to the
"/usr/share/tomcat6/bin/tomcat-juli.jar" library. Because this library was
mandatory for certain operations (such as running the Jasper JSP
precompiler), the "build-jar-repository" command was unable to compose a
valid classpath. With this update, the missing symbolic link has been
added. (BZ#661244)

* Previously, the "tomcat6" init script failed to start Tomcat with a "This
account is currently not available." message when Tomcat was configured to
run under a user that did not have a valid shell configured as a login
shell. This update modifies the init script to work correctly regardless of
the daemon user's login shell. Additionally, these new tomcat6 packages now
set "/sbin/nologin" as the login shell for the "tomcat" user upon
installation, as recommended by deployment best practices. (BZ#678671)

* Some standard Tomcat directories were missing write permissions for the
"tomcat" group, which could cause certain applications to fail with errors
such as "No output folder". This update adds write permissions for the
"tomcat" group to the affected directories. (BZ#643809)

* The "/usr/sbin/tomcat6" wrapper script used a hard-coded path to the
"catalina.out" file, which may have caused problems (such as for logging
init script output) if Tomcat was being run with a user other than "tomcat"
and with CATALINA_BASE set to a directory other than the default.
(BZ#695284, BZ#697504)

* Stopping Tomcat could have resulted in traceback errors being logged to
"catalina.out" when certain web applications were deployed. (BZ#698624)

Users of Tomcat should upgrade to these updated packages, which contain
backported patches to correct these issues. Tomcat must be restarted for
this 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/):

636997 - Additionally Created Instances of Tomcat  are broken / don't work
643809 - Bad permissions on tomcat folders
656246 - CVE-2010-4172 tomcat: cross-site-scripting vulnerability in the manager application
661244 - Missing tomcat6-juli link in /usr/share/java
675786 - CVE-2011-0013 tomcat: XSS vulnerability in HTML Manager interface
675792 - CVE-2010-3718 tomcat: file permission bypass flaw
678671 - tomcat user requires login shell
695284 - catalina.out path hard-coded in /usr/sbin/tomcat6
697504 - tomcat6-6.0.wrapper redirects init script output to wrong place

6. Package List:

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/tomcat6-6.0.24-33.el6.src.rpm

noarch:
tomcat6-6.0.24-33.el6.noarch.rpm
tomcat6-admin-webapps-6.0.24-33.el6.noarch.rpm
tomcat6-docs-webapp-6.0.24-33.el6.noarch.rpm
tomcat6-el-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-javadoc-6.0.24-33.el6.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-lib-6.0.24-33.el6.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-33.el6.noarch.rpm
tomcat6-webapps-6.0.24-33.el6.noarch.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/tomcat6-6.0.24-33.el6.src.rpm

noarch:
tomcat6-6.0.24-33.el6.noarch.rpm
tomcat6-admin-webapps-6.0.24-33.el6.noarch.rpm
tomcat6-docs-webapp-6.0.24-33.el6.noarch.rpm
tomcat6-el-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-javadoc-6.0.24-33.el6.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-lib-6.0.24-33.el6.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-33.el6.noarch.rpm
tomcat6-webapps-6.0.24-33.el6.noarch.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/tomcat6-6.0.24-33.el6.src.rpm

noarch:
tomcat6-6.0.24-33.el6.noarch.rpm
tomcat6-el-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-lib-6.0.24-33.el6.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-33.el6.noarch.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/tomcat6-6.0.24-33.el6.src.rpm

noarch:
tomcat6-admin-webapps-6.0.24-33.el6.noarch.rpm
tomcat6-docs-webapp-6.0.24-33.el6.noarch.rpm
tomcat6-javadoc-6.0.24-33.el6.noarch.rpm
tomcat6-webapps-6.0.24-33.el6.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/tomcat6-6.0.24-33.el6.src.rpm

noarch:
tomcat6-6.0.24-33.el6.noarch.rpm
tomcat6-el-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-33.el6.noarch.rpm
tomcat6-lib-6.0.24-33.el6.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-33.el6.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/tomcat6-6.0.24-33.el6.src.rpm

noarch:
tomcat6-admin-webapps-6.0.24-33.el6.noarch.rpm
tomcat6-docs-webapp-6.0.24-33.el6.noarch.rpm
tomcat6-javadoc-6.0.24-33.el6.noarch.rpm
tomcat6-webapps-6.0.24-33.el6.noarch.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-2010-3718.html
https://www.redhat.com/security/data/cve/CVE-2010-4172.html
https://www.redhat.com/security/data/cve/CVE-2011-0013.html
https://access.redhat.com/security/updates/classification/#moderate
http://tomcat.apache.org/security-6.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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