Bug 75418 - useradd creates group readable/writable mailspool file
useradd creates group readable/writable mailspool file
Status: CLOSED DUPLICATE of bug 59810
Product: Red Hat Linux
Classification: Retired
Component: shadow-utils (Show other bugs)
i386 Linux
high Severity medium
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Assigned To: Nalin Dahyabhai
David Lawrence
: Security
Depends On:
  Show dependency treegraph
Reported: 2002-10-08 06:11 EDT by Jarno Huuskonen
Modified: 2007-03-26 23:57 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-02-21 13:49:47 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch from Owl for securely creating the mailspool file (1.17 KB, patch)
2002-10-08 06:13 EDT, Jarno Huuskonen
no flags Details | Diff

  None (edit)
Description Jarno Huuskonen 2002-10-08 06:11:17 EDT
Description of Problem:
useradd creates /var/spool/mail/username mailspool file with mode 0660, so
if the users primary group is a shared group eg. users then all other group
members can read/write the poor users mails.

Version-Release number of selected component (if applicable):

How Reproducible:

Steps to Reproduce:
1. useradd -g users somebody

Actual Results:
/var/spool/mail/somebody is owned by somebody:users and is mode 0660

Expected Results:
/var/spool/mail/somebody should not be readable/writable by users group !

Additional Information:
This bug is a duplicate of 59810. This one just applies to RH 7.3. I also
checked the latest rawhide shadow-utils and it still has the same buggy
shadow-20000902-mailspool.patch patch.

Owl has a patch for "correctly" creating the mailspool. That patch applies to
shadow-utils-20000902-7 with minimal changes. I'll attach the patch.
Comment 1 Jarno Huuskonen 2002-10-08 06:13:49 EDT
Created attachment 79325 [details]
Patch from Owl for securely creating the mailspool file
Comment 2 Alan Cox 2002-12-18 13:03:50 EST

*** This bug has been marked as a duplicate of 59810 ***
Comment 3 Red Hat Bugzilla 2006-02-21 13:49:47 EST
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.

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