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RedHat: 'xinetd' excessive permissions Print E-mail
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Posted by LinuxSecurity.com Team   
RedHat Linux Applications using the xinetdumask and not setting the permissions themselves (like swat from the sambapackage), will create world writable files.

---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated xinetd package available for Red Hat Linux 7 and 7.1
Advisory ID:       RHSA-2001:075-04
Issue date:        2001-06-04
Updated on:        2001-06-05
Product:           Red Hat Linux
Keywords:          xinetd umask 2.4 kernel linuxconf
Cross references:  
Obsoletes:         
---------------------------------------------------------------------

1. Topic:

Xinetd runs with umask 0 - this means that applications using the xinetd
umask and not setting the permissions themselves (like swat from the samba
package), will create world writable files.

2. Relevant releases/architectures:

Red Hat Linux 7.0 - alpha, i386

Red Hat Linux 7.1 - i386

3. Problem description:

Xinetd runs with umask 0 - this means that applications using the xinetd
umask and not setting the permissions themselves (like swat from the samba
package), will create world writable files. This update sets the default
umask to 022. Also, the web interface for linuxconf did not work in Red Hat
Linux 7.1. Other minor issues have also been addressed.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed  (http://bugzilla.Red Hat.com/bugzilla for more info):

38669 - /etc/xinetd.d/*-udp files syntax error on
23560 - xinetd - linuxconf-web still not fixed

6. RPMs required:

Red Hat Linux 7.0:

SRPMS: 
ftp://updates.Red Hat.com/7.0/en/os/SRPMS/xinetd-2.1.8.9pre15-2.src.rpm

alpha: 
ftp://updates.Red Hat.com/7.0/en/os/alpha/xinetd-2.1.8.9pre15-2.alpha.rpm

i386: 
ftp://updates.Red Hat.com/7.0/en/os/i386/xinetd-2.1.8.9pre15-2.i386.rpm

Red Hat Linux 7.1:

SRPMS: 
ftp://updates.Red Hat.com/7.1/en/os/SRPMS/xinetd-2.1.8.9pre15-2.src.rpm

i386: 
ftp://updates.Red Hat.com/7.1/en/os/i386/xinetd-2.1.8.9pre15-2.i386.rpm



7. Verification:

MD5 sum                           Package Name
--------------------------------------------------------------------------
f661f3b939d4b8aa9eca4e2d4b43eea9 7.0/en/os/SRPMS/xinetd-2.1.8.9pre15-2.src.rpm
81649c7c918d7f3cd8e03cdf7a319410
7.0/en/os/alpha/xinetd-2.1.8.9pre15-2.alpha.rpm
0b66baf9a9809def856b7960eb0b0ef7 7.0/en/os/i386/xinetd-2.1.8.9pre15-2.i386.rpm
59352e4937871a504a24a3d13b6eb589 7.1/en/os/SRPMS/xinetd-2.1.8.9pre15-2.src.rpm
18d39a2f89bf09dc74b6cdc5286e0c49 7.1/en/os/i386/xinetd-2.1.8.9pre15-2.i386.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
     http://www.Red Hat.com/corp/contact.html

You can verify each package with the following command:
    rpm --checksig  

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    rpm --checksig --nogpg 

8. References:




Copyright(c) 2000, 2001 Red Hat, Inc.


 
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