Skip to main content

Railo 3.1 Install on Linux -- Caucho security note

Now that Railo 3.1 is out, I think we will see a jump in commercial usage.  I have done a few installs on production machines now, and wanted to point out a security note.

By default when you install Railo 3.1 (with caucho) on Linux (prob the same for OSX), it adds the following to your apache httpd.conf file:

LoadModule caucho_module /usr/lib/httpd/modules/

ResinConfigServer localhost 6800
CauchoConfigCacheDirectory /tmp
CauchoStatus yes

The bottom one is the problem -- it enables CauchoStatus by default.  That means that you can open up a web browser to and see status info, but there is a lot of detailed info there, including the names of each of the hosts you configured in resin, so people can snoop and see all the railo-enabled sites on that machine.  This might also give a would-be-attacker the info they need to plan a DOS attack, SQL injection attack, etc.. especially since they can see how the server is responding to their attacks.  Pessimistic, I know, but who can you trust on the Internet anymore ?  Kid hackers are emerging just following directions posted online, and some don't even really know what they are doing, but they are causing trouble for you and I.  Better to be safe.

So the simple fix is to update your httpd.conf file and set the status option to no:

CauchoStatus no

For those so inclined, check out Nessus, an open source vulnerability scanner, which picked this up on one of our servers.

Popular posts from this blog

Installing python 3.4.x on OSX El Capitan

I love "brew" package manager, but sometimes being too progressive breaks things.  I have several python apps that I maintain that get deployed to AWS using Elastic Beanstalk.  AWS eb can deploy with python 2.7 or 3.4.  Any recent 'brew install python3" will get 3.5.1. #annoying

Making Macbook Air with 128GB SSD usable with Bootcamp

I recently got a new Macbook Air 11" (the 2012 version) and loaded it with goodies like 8GB ram and 2GHz Core i7.  What I DIDN'T upgrade was the internal SSD.  My config came with 128GB SSD and I refused to pay $300+ to upgrade it to 256GB.  Yeah I know, some call me cheap, but SSds cost $75-$150 for 240GB, so adding another 128GB for $300 seemed way too steep for me.  I figured "ok, I'm going to make 128G work!"

Here is the story of how that went...

Election day plus 1: Social Media Nightmare

It is election day plus 1, and a very emotional day with no way to win for many.

Social media was a force to be reckoned with this election year.  No matter what position you take, the world is ready to pounce on you and tell you why YOU are evil, intolerant or a deplorable -- and the reason for all their woes.  This isn't a new problem, though...  All of the liberal vs conservative issues are causing rifts between otherwise civil people, and it seems to be the worst on Facebook and twitter.

If I say I am for Hillary:
i am part of the "corrupt system."

If I say I am against Hillary:
I am stupid and uneducated

If I say I am for Trump:
I am against women,
I am religiously intolerant,
I am a bigot

If I say I am against Trump:
I am against the 2nd amendment,
I don't have any idea how government works,
I am part of the problem with American society,
I am against the police

Stay with me now, this isn't meant to make people angry, but it is mean to shine some light on a social …