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AusCERT Update AU-2003.009 - Exploit Code Publicly Available For Recent
Cisco DoS Vulnerability
18 July 2003

AusCERT has confirmed that working exploit code for the "Cisco IOS
Interface Blocked by IPv4 Packet" vulnerability has now been made publicly
available.  This increases the threat posed to those sites which haven't       
yet taken the mitigation steps outlined in the Cisco Advisory.  AusCERT
expects that malicious users may already be using this exploit code and
information to attack vulnerable systems.

The latest version of the Cisco advisory is available from:

  http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml

AusCERT will continue to monitor this situation and provide additional information
as it becomes available.

Regards,

The AusCERT Team

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
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.
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