Cisco Cisco Aironet 1200 Access Point Notas de publicación

CSCsa45470—The boot system flash: command no longer generates an unexpected exception 
error.

CSCsa47527—An access point configured as the WDS device no longer incorrectly blocks client 
devices that attempt to reauthenticate using EAP.

CSCsa59600—A document that describes how the Internet Control Message Protocol (ICMP) could 
be used to perform a number of Denial of Service (DoS) attacks against the Transmission Control 
Protocol (TCP) has been made publicly available. This document has been published through the 
Internet Engineering Task Force (IETF) Internet Draft process, and is entitled “ICMP Attacks 
Against TCP” (draft-gont-tcpm-icmp-attacks-03.txt).

These attacks, which only affect sessions terminating or originating on a device itself, can be of 
three types:

1. Attacks that use ICMP “hard” error messages 
2. Attacks that use ICMP “fragmentation needed and Don’t Fragment (DF) bit set” messages, also 
known as Path Maximum Transmission Unit Discovery (PMTUD) attacks 
3. Attacks that use ICMP “source quench” messages

Successful attacks may cause connection resets or reduction of throughput in existing connections, 
depending on the attack type.

Multiple Cisco products are affected by the attacks described in this Internet draft.

Cisco has made free software available to address these vulnerabilities. In some cases there are 
workarounds available to mitigate the effects of the vulnerability.

This advisory is posted at

.

The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security 
Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple 
vendors whose products are potentially affected. Its posting can be found at: 
http://www.niscc.gov.uk/niscc/docs/re-20050412-00303.pdf?lang=en.

If you need information about a specific caveat that does not appear in these release notes, you can use 
the Cisco Bug Toolkit to find select caveats of any severity. Click this URL to browse to the Bug Toolkit:

(If you request a defect that cannot be displayed, the defect number might not exist, the defect might not 
yet have a customer-visible description, or the defect might be marked Cisco Confidential.) 

For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at 

. Click Technology Support, choose Wireless 

from the menu on the left, and click Wireless LAN.