copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
Search this site

On this site

 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login


ESB-2005.0263 -- OpenBSD 3.6 Erratum 014 -- Patch fixes telnet(1) vulnerability

Date: 01 April 2005
References: ESB-2005.0244  ESB-2005.0292  

Click here for printable version
Click here for PGP verifiable version
Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                 ESB-2005.0263 -- OpenBSD 3.6 Erratum 014
                    Patch fixes telnet(1) vulnerability
                               1 April 2005


        AusCERT Security Bulletin Summary

Product:           telnet(1)
Publisher:         OpenBSD
Operating System:  OpenBSD
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated
CVE Names:         CAN-2005-0468 CAN-2005-0469

Ref:               ESB-2005.0244

Original Bulletin:

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

014: SECURITY FIX: March 30, 2005   All architectures

Due to buffer overflows in telnet(1), a malicious server or man-in-the-middle 
attack could allow execution of arbitrary code with the privileges of the user 
invoking telnet(1). Noone should use telnet anymore. Please use ssh(1).

A source code patch exists which remedies this problem.

Patch for OpenBSD 3.6

Patch for OpenBSD 3.5:

- --------------------------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
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:
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.