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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5363) Tighten permissions of DB files to owner with >= JDK7
Date Mon, 08 Apr 2013 22:00:16 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13625893#comment-13625893

Kathey Marsden commented on DERBY-5363:

Are the security manager permissions added for this issue, required for all uses of Derby
including embedded?

"The new code when running on Java 7 on Windows needs the extra RuntimePermission "accessUserInformation"
(to determine the file's owner) when run with the Security Manager. I have added that to the
default "server.policy" file, and the "template.policy", as well as were needed to run the
tests. The tests also needed some more "read" file permissions."

Sorry for the ancient history question.  

> Tighten permissions of DB files to owner with >= JDK7
> -----------------------------------------------------
>                 Key: DERBY-5363
>                 URL: https://issues.apache.org/jira/browse/DERBY-5363
>             Project: Derby
>          Issue Type: Improvement
>          Components: Miscellaneous, Services, Store
>            Reporter: Dag H. Wanvik
>            Assignee: Dag H. Wanvik
>             Fix For:
>         Attachments: derby-5363-basic-1.diff, derby-5363-basic-1.stat, derby-5363-basic-2.diff,
derby-5363-basic-2.stat, derby-5363-basic-3.diff, derby-5363-basic-3.stat, derby-5363-followup.diff,
derby-5363-followup-linux.diff, derby-5363-followup-linux.diff, derby-5363-followup-unix.diff,
derby-5363-followup-unix.diff, derby-5363-followup-unix.stat, derby-5363-full-1.diff, derby-5363-full-1.stat,
derby-5363-full-2.diff, derby-5363-full-2.stat, derby-5363-full-3.diff, derby-5363-full-3.stat,
derby-5363-full-4.diff, derby-5363-full-4.stat, derby-5363-full-5.diff, derby-5363-full-5.stat,
derby-5363-limit-to-java7b.diff, derby-5363-limit-to-java7b.stat, derby-5363-limit-to-java7.diff,
derby-5363-limit-to-java7.stat, derby-5363-server-1.diff, permission-5.diff, permission-5.stat,
permission-6.diff, permission-6.stat, property-table.png, releaseNote.html, releaseNote.html,
releaseNote.html, releaseNote.html, releaseNote.html, releaseNote.html, releaseNote.html,
> Before Java 6, files created by Derby would have the default
> permissions of the operating system context. Under Unix, this would
> depend on the effective umask of the process that started the Java VM.
> In Java 6 and 7, there are methods available that allows tightening up this
> (File.setReadable, setWritable), making it less likely that somebody
> would accidentally run Derby with a too lenient default.
> I suggest we take advantage of this, and let Derby by default (in Java
> 6 and higher) limit the visibility to the OS user that starts the VM,
> e.g. on Unix this would be equivalent to running with umask 0077. More
> secure by default is good, I think.
> We could have a flag, e.g. "derby.storage.useDefaultFilePermissions"
> that when set to true, would give the old behavior.

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