[Geoserver-users] GeoServer 2.11 : Slow HTTP Denial of Service attack

[Ian Turton]

It seems you can easily fix this using any number of servers (
https://blog.qualys.com/securitylabs/2011/11/02/how-to-protect-against-slow-http-attacks)
but not Jetty which isn't really designed for critical production usage.

However if this is truly critical to your organization there are plenty of
commercial support organisations (http://geoserver.org/support/) who may be
able to help.

All the best

Ian

Hi
I have recently started using GeoServer 2.11
As part of my organisation’s requirement I had run a security scan on the
server and found Slow HTTP Denial of Service attack open.
I tried using DoS filter for jetty as below in webapps/geoserver/web.xml,
however, the issue still persists and I could not find any other way to
mitigate this risk on the geoserver.
Request if you could help me on the ASAP as my urgent release is on a hold
in the absence of fixing this risk.
<filter>
<filter-name>DoSFilter</filter-name>
<filter-class>org.eclipse.jetty.servlets.DoSFilter</
filter-class>
<init-param>
<param-name>maxRequestsPerSec</param-name>
<param-value>30</param-value>
<param-name>delayMs</param-name>
<param-value>0</param-value>
<param-name>maxRequestMs</param-name>
<param-value>10000</param-value>
<param-name>maxIdleTrackerMs</param-name>
<param-value>10000</param-value>
</init-param>
<async-supported>true</async-supported>
</filter>
<filter-mapping>
<filter-name>DoSFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Regards
Himani Aggarwal
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[Devin Eyre]

Other than setting the WMS interpolation default to "nearest neighbor", I don't see a way to do this. Within the area that contains data, I do want interpolation to occur. In the past, I've tried using a footprint shapefile, and that did not fix the problem.


[cid:1ce75f06-4cfb-4329-bc60-054ad7bb5303]

I'm using GeoServer version 2.9.2. The data was created by using gdal_translate and gdalwarp to reproject the original file from Lambert Conformal Conic to EPSG:4326 and convert it to Byte type. The no-data value is 255.

[Andrea Aime]

Hi Devin,
for higher order interpolations we are still working on fixes. The good
news is that they are basically done,
the bad one is that they are not in any release and not even in nightly
builds yet.
We'll have to:

- release a new version of jai-ext
- make geotools and geoserver depend on it (at this point they will be
in nightly builds and, when the time comes, in releases)
- you'll have to enable jai-ext support in GeoServer (which is
available, but still considered experimental, hopefully that will change in
GeoServer 2.12, in September). See also
http://docs.geoserver.org/stable/en/user/configuration/image_processing/index.html#jai-ext

I believe in a matter of weeks it will be testable out of nightly builds,
but I don't know exactly when

Cheers
Andrea

Post by Devin Eyre
Other than setting the WMS interpolation default to "nearest neighbor", I
don't see a way to do this. Within the area that contains data, I do want
interpolation to occur. In the past, I've tried using a footprint
shapefile, and that did not fix the problem.
I'm using GeoServer version 2.9.2. The data was created
by using gdal_translate and gdalwarp to reproject the original file
from Lambert Conformal Conic to EPSG:4326 and convert it to Byte type. The
no-data value is 255.
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engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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