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Insecure Library Loading
Moderately critical

Ruby REXML Denial of Service Vulnerability

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Release Date:  2008-08-25    Last Update:  2009-01-06    Views:  6,655

Secunia Advisory SA31602

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Workaround

Software:

CVE Reference(s):

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.

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

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Ruby REXML Denial of Service Vulnerability

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