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From "Tim Ellison (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HARMONY-4663) [classlib][luni]File.createTempFile() is insecure
Date Fri, 24 Aug 2007 10:43:31 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-4663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Tim Ellison resolved HARMONY-4663.

    Resolution: Fixed

Thanks Imran.

Fixed in LUNI module at repo revision r569338.

Please check it was fixed as you expected.

> [classlib][luni]File.createTempFile() is insecure
> -------------------------------------------------
>                 Key: HARMONY-4663
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4663
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Imran Ghory
>            Assignee: Tim Ellison
> createTempFile() generates  a random file name by calling   genTempFile(prefix, newSuffix,
tmpDirFile), however that function generates it's randomness by calling new java.util.Random().nextInt();
which creates a Random() object seeded with the current time. This makes it predictable and
thus insecure[1].
> [1] See section " Temporary Files" at  http://www.faqs.org/docs/Linux-HOWTO/Secure-Programs-HOWTO.html

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