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biznatch Apprentice
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Joined: 23 Jul 2004 Posts: 220 Location: Wichita, KS
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Posted: Mon Sep 27, 2004 9:11 pm Post subject: [SOLVED] I think I have found a security bug |
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Here is the deal, I have a user called backup. Backup is a normal user, except he has a SUID tar file used to backup the system. I discovered that anyone can remove the file owned by root if it was created with SUID tar. Is this a known problem (other than the fact that I am using SUID), or should I file a bug?
Code: | $ pwd
/home/backup
$ whoami
backup
$ groups backup
users
$ ls -l
total 196
-rwsr-sr-x 1 root root 166320 Sep 27 15:54 tar
-rw-r--r-- 1 root root 28022 Sep 27 15:58 test.tar
$ rm test.tar
rm: remove write-protected regular file `test.tar'? y
$ ls -l
total 168
-rwsr-sr-x 1 root root 166320 Sep 27 15:54 tar
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Last edited by biznatch on Fri Oct 01, 2004 2:24 am; edited 1 time in total |
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biznatch Apprentice
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Joined: 23 Jul 2004 Posts: 220 Location: Wichita, KS
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swegener Developer
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Joined: 19 Jun 2004 Posts: 8 Location: Karlsruhe, Germany
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Posted: Mon Sep 27, 2004 10:39 pm Post subject: |
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See my comment I posted to the bug. |
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biznatch Apprentice
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Joined: 23 Jul 2004 Posts: 220 Location: Wichita, KS
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Posted: Thu Sep 30, 2004 8:20 pm Post subject: |
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I was not aware of that. I feel dumb now. _________________ While your waiting for your post to be answered, please help with unanswered posts. |
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