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HistoryDec 07, 2007 - 12:00 a.m.

R7-0031: JFreeChart Image Map Cross-Site Scripting Vulnerabilities

2007-12-0700:00:00
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                    Rapid7 Security Advisory
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Rapid7 Advisory R7-0031
JFreeChart Image Map Cross-Site Scripting Vulnerabilities

Published: Dec 06, 2007
Revision: 1.0
http://www.rapid7.com/advisories/R7-0031.jsp

  1. Affected system(s):

    KNOWN VULNERABLE:
    o JFreeChart 1.0.8

    KNOWN FIXED:
    o JFreeChart 1.0.8 branch "jfreechart-1.0.8-security"

  2. Summary

    JFreeChart is a popular Java-based chart library used to generate
    charts and graphs of data. The library includes support for
    generating HTML image maps, which allow for enhanced interaction of
    the chart via hyperlinks bound to shapes specified by coordinates.

    Multiple cross-site scripting vulnerabilities exist within the
    image map support functionality of JFreeChart which may allow an
    attacker to inject arbitrary HTML or JavaScript into any product
    or website which uses the library.

  3. Vendor status and information

    JFreeChart Project
    http://sourceforge.net/projects/jfreechart/

    The JFreeChart project was notified of this vulnerability on
    November 28th, 2007 via their online bug tracking system. The
    vulnerability was fixed on December 6th 2007 with a commit
    to their SVN repository.

  4. Solution

    Upgrade to JFreeChart SVN repository revision 682
    using branch "jfreechart-1.0.8-security".

    See http://jfreechart.svn.sourceforge.net/viewvc/jfreechart/
    for details.

  5. Detailed analysis

    JFreeChart fails to properly escape the following properties of the
    generated image map:

    o The chart name.
    o The chart tool tip text.
    o The href attribute for a chart area.
    o The shape attribute for a chart area.
    o The coords attribute for a chart area.

    It is possible to inject custom HTML code into the code generated by
    the JFreeChart library. If a web server uses this library to generate
    charts from user-supplied data, an attacker could cause other users of
    the same website or application to execute arbitrary JavaScript code
    when viewing a page containing a chart.

  6. Credit

    Discovered by Chad Loder of Rapid7.

  7. Contact Information

    Rapid7, LLC
    Email: advisory@rapid7.com
    Web: http://www.rapid7.com
    Phone: +1 (617) 247-1717

  8. Disclaimer and Copyright

    Rapid7, LLC is not responsible for the misuse of the information
    provided in our security advisories. These advisories are a service
    to the professional security community. There are NO WARRANTIES with
    regard to this information. Any application or distribution of this
    information constitutes acceptance AS IS, at the user's own risk.
    This information is subject to change without notice.

    This advisory Copyright (C) 2007 Rapid7, LLC. Permission is hereby
    granted to redistribute this advisory, providing that no changes are
    made and that the copyright notices and disclaimers remain intact.