Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                ESB-2004.0597 -- OpenBSD Security Advisory
                     Security flaw in login_radius(8)
                             22 September 2004


        AusCERT Security Bulletin Summary

Product:                login_radius(8)
Publisher:              OpenBSD
Operating System:       OpenBSD-current
                        OpenBSD 3.6
                        OpenBSD 3.5
                        OpenBSD 3.4
Impact:                 Inappropriate Access
Access:                 Remote/Unauthenticated

- --------------------------BEGIN INCLUDED TEXT--------------------

Eilko Bos has reported that radius authentication, as implemented
by login_radius(8), was not checking the shared secret used for
replies sent by the radius server.  This could allow an attacker
to spoof a reply granting unauthorized access to the system.

This has been fixed in OpenBSD-current, OpenBSD 3.6, and the 3.4
and 3.5 -stable branches.  Patches are also available for OpenBSD
3.4 and 3.5:


Note that OpenBSD does not ship with radius authentication enabled.
Unless you have explicitly enabled radius authentication in
/etc/login.conf there is no impact.

For more details see:


 - todd
- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.

Comment: http://www.auscert.org.au/render.html?it=1967