Some vulnerabilities have been reported in Apache Struts, which can be exploited by malicious people to bypass certain security restrictions, to disclose sensitive information, or conduct cross-site scripting attacks.
1) An error in XWork can be exploited to manipulate server-side objects.
2) An error in the "FilterDispatcher" and "DefaultStaticContentLoader" classes can be exploited to download arbitrary files via directory traversal sequences.
These vulnerabilities are reported in versions prior to 2.0.12.
3) Input passed via the "action" attribute in "<s:url>" tags and the "href" attribute in "<s:a>" tags is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
These vulnerabilities are reported in versions prior to 220.127.116.11.
Solution: Update to version 2.0.12.
Provided and/or discovered by: 1) Reported in an XWork bug by Meder Kydyraliev, Google Security Team.
2) The vendor credits Csaba Barta and László Tóth, PricewaterhouseCoopers.
3) Fabio Gandola and Antonio Petrelli
Original Advisory: http://struts.apache.org/2.2.1/docs/s2-002.html
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Subject: Apache Struts Multiple Vulnerabilities
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