asterisk users - Jan 2004 - Cisco Multiple Products H.323 Protocol Denial of Service Vulnerabilities

FYI for those that might have an interest...

> TITLE:
> Cisco Multiple Products H.323 Protocol Denial of Service
> Vulnerabilities
> 
> SECUNIA ADVISORY ID:
> SA10610
> 
> VERIFY ADVISORY:
> http://www.secunia.com/advisories/10610/
> 
> CRITICAL:
> Moderately critical
> 
> IMPACT:
> DoS
> 
> WHERE:
> >From remote
> 
> OPERATING SYSTEM:
> Cisco ATA 180 Series Analog Telephone Adaptors
> Cisco BTS 10200 Softswitch
> Cisco IOS 11.x
> Cisco IOS 12.x
> Cisco IOS R11.x
> Cisco IOS R12.x
> 
> SOFTWARE:
> Cisco CallManager 3.x
> Cisco Conference Connection (CCC) 1.x
> Cisco Internet Service Node (ISN) 2.x
> Cisco IP Phone 7900 Series
> 
> DESCRIPTION:
> Multiple Cisco products contain vulnerabilities in the H.323 protocol
> implementation, which can be exploited by malicious people to cause a
> DoS (Denial of Service).
> 
> The vulnerabilities are caused due to various errors in the
> processing of H.225.0 and Q.931 messages over TCP, which can be
> exploited by sending specially crafted messages to an affected system
> (default port 1720/tcp).
> 
> Successful exploitation may crash or reboot vulnerable devices and
> applications or cause them to consume 100% CPU resources.
> 
> The vulnerabilities affect the following products with H.323
> support:
> 
> * Cisco IOS 11.3T and later versions
> * Cisco CallManager versions 3.0 through 3.3
> * Cisco Conference Connection (CCC)
> * Cisco Internet Service Node (ISN)
> * Cisco BTS 10200 Softswitch
> * Cisco 7905 IP Phone H.323 Software Version 1.00
> * Cisco ATA 18x series products running H.323/SIP loads with versions
> earlier than 2.16.1
> 
> SOLUTION:
> See patch matrices and workarounds in original advisory:
> http://www.cisco.com/warp/public/707/cisco-sa-20040113-h323.shtml#software
>
http://www.cisco.com/warp/public/707/cisco-sa-20040113-h323.shtml#workarounds
> 
> PROVIDED AND/OR DISCOVERED BY:
> NISCC
> 
> ORIGINAL ADVISORY:
> Cisco:
> http://www.cisco.com/warp/public/707/cisco-sa-20040113-h323.shtml
> 
> NISCC:
> http://www.uniras.gov.uk/vuls/2004/006489/h323.htm
> 
> ----------------------------------------------------------------------
> 
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> 
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