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IDS Forum

Re: Chunk must have owner-id informix

Posted By: jorge valenzuela
Date: Monday, 28 August 2017, at 7:29 p.m.

In Response To: Re: Chunk must have owner-id informix (Jonathan Leffler)

Thanks.

> El 28/08/2017, a las 15:50, Jonathan Leffler <jonathan.leffler@gmail.com> escribió:
>
> If you're not sure why a chunk name or other file or directory is regarded
> as insecure, then you can use the 'onsecurity' program (from
> $INFORMIXDIR/bin) to check. It uses the same code as the server uses it
> is just packaged as a standalone (and fairly small) program.
>
> onsecurity -h
>
> gives you help about how to use it. onsecurity -v tells you why it thinks
> something is secure; it tells you anyway if it thinks it is insecure.
>
> For example, on a Mac running 12.10.FC6:
>
> $ onsecurity -v $INFORMIXDIR
> # /opt/informix/12.10.FC6 (path is trusted)
> # Analysis:
> # User Group Mode Type Secure Name
> # 0 root 0 wheel 0755 DIR YES /
> # 0 root 0 wheel 0755 DIR YES /opt
> # 503 informix 704 informix 0755 DIR YES /opt/informix
> # 503 informix 704 informix 0755 DIR YES /opt/informix/12.10.FC6
> $
>
> You can specify a chunk path or a directory or other file. It tracks
> symlinks and reports if there are components of the paths through those
> symlinks that it thinks are not secure, etc. It is paranoid, but it
> explains its paranoia. For example, there isn't a file 'interloper' in my
> $TMPDIR (and that is a peculiar location set by the system on a Mac):
>
> $ onsecurity $TMPDIR/interloper
> # !!! SECURITY PROBLEM !!!
> # /var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T//interloper (path is not
> trusted)
> # Analysis:
> # User Group Mode Type Secure Name
> # 0 root 0 wheel 0755 DIR YES /
> # 0 root 0 wheel 0755 LINK YES /var
> # --> private/var
> # 0 root 0 wheel 0755 DIR YES /private
> # 0 root 0 wheel 0755 DIR YES /private/var
> # 0 root 0 wheel 0755 DIR YES /private/var/folders
> # 0 root 0 wheel 0755 DIR YES /private/var/folders/77
> # 501 jleffler 20 staff 0755 DIR NO
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn
> # 501 jleffler 20 staff 0700 DIR NO
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T
> # Name: /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn
> # Problem: owner jleffler (uid 501) is not trusted
> # Name: /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T
> # Problem: owner jleffler (uid 501) is not trusted
> # lstat() failed on
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T/interloper
> # errno = 2: No such file or directory
> $
>
> There is also a '-r' option to recommend changes:
>
> $ onsecurity -r $TMPDIR/interloper
> #!/bin/sh
> # Script to fix permissions on specified files or directories
> # Should be run by user root
>
> # !!! SECURITY PROBLEM !!!
> # /var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T//interloper (path is not
> trusted)
> # Analysis:
> # User Group Mode Type Secure Name
> # 0 root 0 wheel 0755 DIR YES /
> # 0 root 0 wheel 0755 LINK YES /var
> # --> private/var
> # 0 root 0 wheel 0755 DIR YES /private
> # 0 root 0 wheel 0755 DIR YES /private/var
> # 0 root 0 wheel 0755 DIR YES /private/var/folders
> # 0 root 0 wheel 0755 DIR YES /private/var/folders/77
> # 501 jleffler 20 staff 0755 DIR NO
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn
> # 501 jleffler 20 staff 0700 DIR NO
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T
> # Name: /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn
> # Problem: owner jleffler (uid 501) is not trusted
> # Name: /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T
> # Problem: owner jleffler (uid 501) is not trusted
> # lstat() failed on
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T/interloper
> # errno = 2: No such file or directory
>
> chown root /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn \
>
> /private/var/folders/77/zx9nk6dn7_dg4xd4stvt42v00000gn/T
>
> # End of script
> $
>
> This does not run any shell commands. It generates on standard output a
> set of commands that could be run by an appropriately privileged user
> (think 'root') to fix the problem. There are a bunch of options to tune
> the recommendations:
>
> $ onsecurity -h
> Usage: onsecurity [-dehinpqrtvV][-u user][-g group] [-G action] [-O action]
>
> [-U action] file-or-directory [...]
> Option summary:
> -d Print diagnostic output
> -e Do not read files from /etc/informix
> -g group Treat group as trusted
> -h Print this help message and exit
> -i Do not trust user informix or group informix
> -n Do not trust system users (bin, sys) or groups (bin, sys,
> ....)
> -p Perform analysis, assuming PRIVATE mode installation
> -q Quiet: suppress analysis regardless of failure or success
> -r Recommend changes to fix security problems
>
> -t Terse: print minimal analysis on failure
> -u user Treat user as trusted
> -v Verbose: print analysis regardless of failure or success
> -G action How to fix directories with flawed group permissions
> -O action How to fix directories with flawed other permissions
> -U action How to fix directories with flawed user permissions
> -V Print version and exit
> -version Print extended version information and exit
>
> Actions (for -G, -O, -U):
> chgrp[=group] (-G) Change group to nominated group
> chown[=user] (-U) Change user to nominated user
> chmod (-G, -O) Change mode to remove write access
> add (-G, -O, -U) Add user, group or directory to trusted list
> Default actions are:
> -G chmod
> -O chmod
> -U chown
>
> Do not use the add option unless there is no acceptable alternative.
> Do NOT use the add option for -O (it leaves your system very insecure).
> Save and execute the script generated, possibly after editing it.
>
> $
>
> On Mon, Aug 28, 2017 at 12:01 PM, jorge valenzuela <jorgervt@gmail.com>
> wrote:
>
>> Hi,
>>
>> After a fail electricity power, we restar the server, then got this error:
>> The chunk must have owner-id and group-id informix
>>
>> I list the chunk and see that it has owner and group informix.
>>
>> Any ideas?
>>
>> Thanks in advance.
>>
>>
>> ************************************************************
>> *******************
>> Forum Note: Use "Reply" to post a response in the discussion forum.
>>
>>
>
> --
> Jonathan Leffler <jonathan.leffler@gmail.com> #include <disclaimer.h>
> Guardian of DBD::Informix - v2015.1101 - http://dbi.perl.org
> "Blessed are we who can laugh at ourselves, for we shall never cease to be
> amused."
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>

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