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https://issues.apache.org/jira/browse/KARAF-5330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16154911#comment-16154911
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Guillaume Nodet edited comment on KARAF-5330 at 9/6/17 7:00 AM:
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The shell supports reflection, and the reflection mechanism itself isn't
secured by roles.
If you are really concerned about security, the only thing you can do is to use
a java security manager and permissions. This way, you can also secure the
file system access.
was (Author: gnt):
The shell is reflection based, and the reflection mechanism itself isn't
secured by roles.
If you are really concerned about security, the only thing you can do is to use
a java security manager and permissions. This way, you can also secure the
file system access.
> Default access control list for console allows any user to cat files, and
> write to files.
> -----------------------------------------------------------------------------------------
>
> Key: KARAF-5330
> URL: https://issues.apache.org/jira/browse/KARAF-5330
> Project: Karaf
> Issue Type: Bug
> Components: karaf-security, karaf-shell
> Reporter: Tom Quarendon
> Assignee: Jean-Baptiste Onofré
> Fix For: 4.2.0, 4.0.10, 4.1.3
>
>
> The shell:cat command has no access control list associated with it in the
> default configuration.
> The same is true of the "shell:ls" command. There may be other shell:
> commands too that can provide filesystem access. I don't know whether cd, pwd
> for example should be secured. "tac" most certainly should.
> This means that any user that can access the ssh console can navigate the
> filesystem, reading and writing files as they like.
> For example, given the default configuration, if I have a "normal" user and
> can therefore access the console, I can use shell commands to find our or
> guess the location of the karaf install (shell:pwd will do that), then cat
> the contents of the etc/users.properties file and find out all users
> passwords (in the default configuration the passwords are in plain text). I
> can also cat the etc/host.key file which would seem undesirable.
> tac clearly would be a very dangerous command to have access to. It seems
> likely that I could subvert many things by just writing directly to
> configuration files using tac. I could, for example, change, or at least
> invalidate the admin password by rewriting the users.properties file.
> All in all this feels like a major issue.
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