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Core Security Technologies - CoreLabs Advisory
http://www.coresecurity.com/corelabs/
Hyperic HQ Multiple XSS
1. *Advisory Information*
Title: Hyperic HQ Multiple XSS
Advisory Id: CORE-2009-0812
Advisory URL:
http://corelabs.coresecurity.com/index.php?module=Wiki&action=view&type=
advisory&name=Hyperic_HQ_Multiple_XSS
Date published: 2009-10-02
Date of last update: 2009-10-02
Vendors contacted: SpringSource
Release mode: Coordinated release
2. *Vulnerability Information*
Class: Cross site scripting [CWE-79]
Impact: Code execution
Remotely Exploitable: Yes
Locally Exploitable: No
Bugtraq ID: N/A
CVE Name: CVE-2009-2897, CVE-2009-2898
3. *Vulnerability Description*
Hyperic HQ [1] is an open source monitoring software designed to
manage web applications and infrastructure. It auto-discovers system
resources (including hardware, operating systems and databases), and
is able to monitor hosts and services.
Multiple cross-site scripting vulnerabilities (both stored and
reflected) have been found in the web interface of Hyperic HQ, which
can be exploited by an attacker to execute arbitrary JavaScript code
in the context of the browser of a legitimate logged in user.
4. *Vulnerable packages*
. Hyperic HQ 3.2
. Hyperic HQ 4.0
. Hyperic HQ 4.1
. Hyperic HQ 4.2-beta1
. Earlier (unsupported) versions may also be affected.
5. *Non-vulnerable packages*
. Hyperic HQ 4.2-beta2 or later
6. *Vendor Information, Solutions and Workarounds*
6.1. *Mitigation*
. Users of Hyperic HQ 3.2.6 should apply the 3.2.6.1 patch.
. Users of Hyperic HQ 4.0 should upgrade to 4.0.3 and then apply
the 4.0.3.1 patch.
. Users of Hyperic HQ 4.1 should upgrade to 4.1.2 and then apply
the 4.1.2.1 patch.
. Users of Hyperic HQ 4.2-beta1 users should upgrade to 4.2-beta2
or later.
6.2. *Obtaining the security patches*
The security patches may be obtained from:
. http://download.hyperic.com/dl/patch/hq.jar.3.2.6.1.zip
. http://download.hyperic.com/dl/patch/hq.jar.4.0.3.1.zip
. http://download.hyperic.com/dl/patch/hq.jar.4.1.2.1.zip
6.3. *Applying the security patches*
The security patches may be applied by following these steps:
1. If you are not already running version 3.2.6, 4.0.3 or 4.1.2,
you must upgrade to one of these versions.
2. Download the zip file containing the appropriate patch for your
version.
3. Stop the Hypric HQ server.
4. Copy the original
'hq-engine/server/default/deploy/hq.ear/hq.jar' to a safe location
outside of the Hyperic HQ installation.
5. Copy the original
'hq-engine/server/default/deploy/hq.ear/hq.war/WEB-INF/lib/hq_jsp.jar'
to a safe location outside of the Hyperic HQ installation.
6. Extract the 'hq.jar' and 'hq_jsp.jar' files from the zip file.
7. Replace 'hq-engine/server/default/deploy/hq.ear/hq.jar' with the
'hq.jar' file you extracted in step 6.
8. Replace
'hq-engine/server/default/deploy/hq.ear/hq.war/WEB-INF/lib/hq_jsp.jar'
with the 'hq_jsp.jar' file you extracted in step 6.
9. Start the Hyperic HQ server.
Note: applying this patch will correct CVE-2009-2897 and CVE-2009-2898.
7. *Credits*
These vulnerabilities were discovered and researched by Gaston Rey and
Pablo Carballo from Core Security Technologies during Bugweek 2009 [2].
8. *Technical Description / Proof of Concept Code*
8.1. *Introduction*
Multiple cross-site scripting vulnerabilities (both stored and
reflected) have been found in the web interface of Hyperic HQ, which
can be exploited by an attacker to execute arbitrary JavaScript code
in the context of the browser of a legitimate logged in user.
8.2. *Reflected XSS Vulnerability (CVE-2009-2897)*
A reflected cross-site scripting vulnerability was found in the
generic exception handler of Hyperic, located in
'hq/web/common/GenericError.jsp'. When there is an uncatched exception
in Hyperic, this generic exception handler is invoked. It shows a
stack trace, including the data that caused the error without
sanitizing it, leading to a reflected XSS. This is the vulnerable code:
/-----
hq/web/common/GenericError.jsp:
...
<c:if test="${not empty exception}">
<div id="exception" style="visibility:hidden">
<%=StringUtil.getStackTrace(exception)%>
</div>
<c:if test="${not empty root}">
<div id="root" style="visibility:hidden">
<%=StringUtil.getStackTrace(root)%>
</div>
</c:if>
</c:if>
...
- -----/
This XSS can be triggered by sending invalid data for numeric
parameters in several '.do' pages, causing the webapp to raise a
'java.lang.NumberFormatException' exception; this way,
'GenericError.jsp' will be called and it will print the data that
caused the exception without escaping HTML characters, leading to the
XSS vulnerability.
The following '.do' pages are affected, among others:
/-----
http://<hyperic-server>:7080/mastheadAttach.do?typeId=<script>alert(docu
ment.cookie)</script>
http://<hyperic-server>:7080/Resource.do?eid=<script>alert(document.cook
ie)</script>
http://<hyperic-server>:7080/admin/user/UserAdmin.do?mode=view&u=<script
>alert(document.cookie)</script>
- -----/
8.3. *Stored XSS Vulnerability (CVE-2009-2898)*
A stored cross-site scripting vulnerability was found in the 'Alerts'
list of Hyperic HQ. An authenticated Hyperic user can create an alert
with JavaScript code in the 'Description' field. When a user visits
the 'Alerts' list, the 'Description' field of every alert is displayed
without properly escaping especial HTML characters, thus leading to a
persistent XSS.
As a proof of concept, create a new alert and insert the following
JavaScript code in the 'Description' field:
/-----
<script>alert(document.cookie)</script>
- -----/
Afterwards, when a Hyperic user visits the 'Alerts' list, the
JavaScript code embedded into the 'Description' of the malicious alert
will be executed:
/-----
http://<hyperic-server>:7080/alerts/Config.do?mode=list&rid=10001&type=3
- -----/
8.4. *Remarks*
The Hyperic HQ web interface includes a console that allows
administrators to run Groovy code directly in the Hyperic server [3].
That code is executed in the same process as the Hyperic server. So,
by exploiting any of these XSS vulnerabilities to steal an
administrator cookie, and by running arbitrary Groovy code through the
web console, it seems not only possible to compromise the web
application, but also to fully compromise the machine where Hyperic is
running.
9. *Report Timeline*
. 2009-09-01:
Core Security Technologies notifies the Hyperic team of the
vulnerability.
. 2009-09-02:
The Hyperic team asks Core for a technical description of the
vulnerability.
. 2009-09-03:
Core sends a draft security advisory with technical details and PoC
and announces its initial plan to publish the advisory on September
22nd, 2009.
. 2009-09-04:
Hyperic team acknowledges notification and announces the investigation
about the reported issue started.
. 2009-09-16:
Core requests information about the nature of the fix and an estimated
date of fix available. Core awaits updated information.
. 2009-09-16:
Hyperic team notifies the investigation about the reported issues is
still in progress, the issues have been evaluated and Hyperic team
agrees that they are security vulnerabilities. The Hyperic team
notifies the proposed release date (2009-09-22) will probably be too
soon and it may require some adjust.
. 2009-09-18:
Hyperic team confirms that the issues are present in versions 4.0, 4.1
and the soon to be released 4.2. Hyperic team also notifies the fixes
for all affected version will be available near mid-October [4].
. 2009-09-21:
The Hyperic team informs they have unintentionally disclosed some
information relating to these vulnerabilities in the associated commit
messages for the fixes. As a result of this, Hyperic team is adjusting
its release plan and intend to release patches for 4.1, 4.0 as soon as
possible.
. 2009-09-21:
A technical report about these vulnerabilities was sent by Hyperic team.
. 2009-09-21:
Core agrees to wait Hyperic team for patches and fixes, and the
advisory publication is re-scheduled for the beginning of October. In
spite of that, Core also notifies that if at any prior moment it is
detected that the bug is being exploited in the wild, Core will
publish the advisory immediately as 'user release'.
. 2009-10-01:
Core requests information about of the fix and asks if all affected
version will be patched and available near mid-October (as planned by
Hyperic team).
. 2009-10-02:
The Hyperic team notifies they are ready to make the release
announcement, including the vulnerability announcement.
. 2009-10-02:
Core asks the Hyperic team for additional information, the patched
version numbers and possible workarounds.
. 2009-10-02:
A complete report about the requested information was sent by Hyperic
team.
. 2009-10-02:
The advisory CORE-2009-0812 is published.
10. *References*
[1] http://www.hyperic.com/.
[2] The authors participated in Core Bugweek 2009 as members of the
team "Estupido y Sensual Flanders".
[3] http://support.hyperic.com/display/DOC/ui-Groovy/.
[4] http://sourceforge.net/projects/hyperic-hq/files/.
11. *About CoreLabs*
CoreLabs, the research center of Core Security Technologies, is
charged with anticipating the future needs and requirements for
information security technologies. We conduct our research in several
important areas of computer security including system vulnerabilities,
cyber attack planning and simulation, source code auditing, and
cryptography. Our results include problem formalization,
identification of vulnerabilities, novel solutions and prototypes for
new technologies. CoreLabs regularly publishes security advisories,
technical papers, project information and shared software tools for
public use at: http://www.coresecurity.com/corelabs.
12. *About Core Security Technologies*
Core Security Technologies develops strategic solutions that help
security-conscious organizations worldwide develop and maintain a
proactive process for securing their networks. The company's flagship
product, CORE IMPACT, is the most comprehensive product for performing
enterprise security assurance testing. CORE IMPACT evaluates network,
endpoint and end-user vulnerabilities and identifies what resources
are exposed. It enables organizations to determine if current security
investments are detecting and preventing attacks. Core Security
Technologies augments its leading technology solution with world-class
security consulting services, including penetration testing and
software security auditing. Based in Boston, MA and Buenos Aires,
Argentina, Core Security Technologies can be reached at 617-399-6980
or on the Web at http://www.coresecurity.com.
13. *Disclaimer*
The contents of this advisory are copyright (c) 2009 Core Security
Technologies and (c) 2009 CoreLabs, and may be distributed freely
provided that no fee is charged for this distribution and proper
credit is given.
14. *PGP/GPG Keys*
This advisory has been signed with the GPG key of Core Security
Technologies advisories team, which is available for download at
http://www.coresecurity.com/files/attachments/core_security_advisories.a
sc.
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