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Insecure Library Loading
Not critical

Apache Modules Client Disconnect Denial of Service

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Release Date:  2009-07-10    Last Update:  2009-07-29    Views:  6,383

Secunia Advisory SA35781

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A weakness has been reported in Apache, which can be exploited by malicious people to cause a DoS (Denial of Service).

The weakness is caused due to Apache not properly stopping certain modules when a client disconnects. This can be exploited to e.g. cause a high CPU load by requesting large files which are compressed by mod_deflate and then disconnecting.

Successful exploitation requires that e.g. mod_deflate or a similar module is enabled.


Solution:
Update to version 2.2.12.

Provided and/or discovered by:
Reported in a Debian bug by François Guerraz.

Original Advisory:
Debian bug #534712:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534712

Apache Foundation:
http://svn.apache.org/viewvc?view=rev&revision=791454
http://www.apache.org/dist/httpd/CHANGES_2.2.12

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: Apache Modules Client Disconnect Denial of Service

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