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Ruby REXML Denial of Service Vulnerability
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Secunia Advisory:
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SA31602
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Release Date:
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2008-08-25
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Last Update:
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2009-01-06
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Popularity:
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2,178 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | Ruby 1.8.x
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| | CVE reference: | CVE-2008-3790
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Description:
A vulnerability has been reported in Ruby, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error in the REXML library when processing recursively nested XML entities. This can be exploited to cause a DoS via a specially crafted XML document.
The vulnerability is reported in versions 1.8.6-p287, 1.8.7-p72, and 1.9.x. Other versions may also be affected.
Solution:
The vendor recommends including an additional script in applications using REXML. Please see vendor advisory for more details.
Provided and/or discovered by:
Luka Treiber, ACROS Security.
Changelog:
2008-08-28: Added CVE reference.
2009-01-06: Updated "Credits" section. Added link to ACROS Security to "Original Advisory" section.
Original Advisory:
Ruby:
http://www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml/
ACROS Security:
http://www.acrossecurity.com/aspr/ASPR-2009-01-05-1-PUB.txt
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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