NAME

vum, vum.pl - vulnerability mitigator


SYNOPSIS

vum [--options]

vum.pl [--options]


DESCRIPTION

VuM makes modifications to the operating system in order to make it less vulnerable to security breaches.

These modifications include changing file/directory ownership, access permissions, creation/deletion of files, and edition of file content.


OPTIONS

 --basic        : harmless changes
 --debug        : detailed verbosity
 --deinstall    : remove components
 --fake         : simulate changes
 --help         : usage syntax
 --install      : setup components
 --medium       : harmfull changes
 --quiet        : disable messages
 --secure       : perform changes
 --top          : extreme changes
 --undo         : revert changes
 --verbose      : inform activities
 --version      : inform version


USAGE

VuM must be executed with `root' privileges.

A system reboot may be required after the use of the `secure/undo' operations with the `medium' or `top' options.


FILES

 /usr/local/vum                 installation directory
 /var/opt/vum/backup            backup directory
 /var/opt/vum/lock              lock directory
 /var/opt/vum/log               log directory
 /var/opt/vum/tmp               temporary directory


EXAMPLES

Example 1: Checking without changing

The following example runs without making any changes to the operating system files:

# vum --fake --soft


ENVIRONMENT

VuM may utilize the following environment variables, if they exist:

VUM_LOG Alternate log directory

VUM_BKP Alternate backup directory


EXIT STATUS

The following exit values are returned:

0 No erros of any kind.

>0 An error occurred.


DIAGNOSTICS

No permission You are not Super-user.


SEE ALSO

chgrp(1), chmod(1), chown(1).


NOTES

Althoug VuM does not require a large amount of disk space for logs and backups, the log and backup directories should not be placed in a filesystem with limited disk capacity (specially if you plan to run VuM frequently).


SECURITY NOTES

Carefully test your system and applications after using the 'medium' or `top' options, and if any problem is found, just use the 'undo' option right away, and your system files will be restored to the status and contents they had before the last execution of VuM.


CAVEATS

Before using the 'undo' option, make sure that none of the files saved by VuM has changed since its last run, otherwise unpredictable results may occur.


BUGS

Wildcards on the status verification lists are not supported yet.

Not all o.s. versions and releases are supported as of the current version.


LICENSE

VuM is free software and is licensed under the Apache Software License (ASL), Version 2.0, as published by the Apache Software Foundation (ASF).

A copy of the ASF ASL is distributed along with VuM ; If not, the license may be obtained at :

   (text)   http://www.apache.org/licenses/LICENSE-2.0.txt
   (html)   http://www.apache.org/licenses/LICENSE-2.0.html

Otherwise you can write to :

 The Apache Software Foundation
 1901 Munsey Drive, Forest Hill, MD 21050-2747 U.S.A.


SUPPORT

 Commercial support is NOT available for VuM.
 Limited support is available via email.


AUTHOR

The original and current versions consist of code and documentation written by:

        Alexandre V. R. Botao < alexandre@botao.org >
        ( www.botao.org )


DISCLAIMER

Unless required by applicable law or agreed to in writing, VuM is provided on an ``AS IS'' basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the ASF ASL for the specific language governing permissions and limitations.

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