Re: [Php-java-bridge-users] Debian's security manager tomcat X SELinux

Hi Andre,

I am moving to Hamburg , so I probably won't have much time until next week.

The attachment didn't come through, btw. My telefone cannot decode base64
attachments, yet. I assume that you have added some rules to allow php to
execute scripts.

But I am not yet convinced that a strict java policy is worth the trouble.
The biggest security hole is php itself, not some missing java policy.

Regards,
Jost Boekemeier


Apr 30, 2009 5:22 nachm. schrieb am <
php...@li...>:

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Hello, Jost

I tested today against Tomcat 5.5 with the attached

/etc/tomcat5.5/policy.d/60JavaBridge.policy

with ideas taken from project's /server/javabridge.policy and

it worked with auto-deploy of JavaBridge.war, using

bridge deb package compiled from cvs.

The file is not at the repository, yet (will include the gpl

header at least).



Unfortunately I will likely not have time to test against

Debian Tomcat 6.x until next week.

The debian package at cvs is prepared to work with tomcat 5.5,

so I expect some effort ahead to debug this.



A regular debian package installing files at tomcat system lib dir

should be avoided whenever possible.

As it is working at the debian tomcat5.5 with auto-deploying, I will

try to test with debian tomcat 6 and get it working in similar way.



I am not a security expert, so if the tomcat security is not enough,

will have to package the javabridge selinux configurations.

I guess there is a debian way to package these configs too.



Regards.

Andre Felipe Machado

http://www.techforce.com.br







On Thu, 30 Apr 2009 08:28:12 +0200,

php...@li... wrote:

> Hi Andre,

>

> I have just tested it on a tomcat 6.0.18 running with -security switched

> on.

> It stops the PhpCGIServlet from executing /bin/sh.

>

> This can be solved by removing the JavaBridge.jar, php-servlet.jar and

> php-script.jar from the application "JavaBridge.war", and adding them to

> the

> shared library dir TOMCAT_HOME/lib/ instead. Neither additional security

> declarations nor manipulations of global, shared XML files are necessary

> to

> fix this problem.

>

> It is true that PHP scripts may do foolish things like killing all other

> running php scripts, <?php system("killall php")?>, or even its own java

> container, <?php system("killall java");?>, but Java security doesn't

> help.

> The best way to secure PHP scripts is to use "Security Enhanced Linux"

> rules. RedHat Fedora and Enterprise Linux already contains these rules.

> Rules for the PHP/Java Bridge are contained in the security folder of the

> redhat RPM, and applied when the RPM is installed.

>

> Regards,

> Jost Boekemeier


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