full-disclosure - ASN.1 telephony critical infrastructure warning

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Message-ID: <1937448633.20040218105807@SECURITY.NNOV.RU>
From: 3APA3A at SECURITY.NNOV.RU (3APA3A)
Subject: ASN.1 telephony critical infrastructure warning - VOIP

Dear Florian Weimer,

It's different thing. Any infrastructure based on Windows is under risk.
But it's not because VoIP uses ASN.1.

--Wednesday, February 18, 2004, 12:32:10 AM, you wrote to 3APA3A@...URITY.NNOV.RU:

FW> 3APA3A wrote:

>> ASN.1  is  used  by  many  services,  but  all  use different underlying
>> protocols.  It's  not  likely  NetMeeting or MS ISA server to be primary
>> attack  targets.  Attack  against  MS  IPSec  implementation,  Exchange,
>> SMB/CIFS, RPC services, IIS and specially IE will no have impact to VoIP
>> infrastructure  (except  connectivity  degradation  because  of  massive
>> traffic).

FW> I wish your assessment were true, but it's not.  Cisco Call Manager is
FW> based on Windows, and Cisco still has to certify the patches Microsoft
FW> released.

FW> It's sad that Microsoft apparently hasn't used those six months to
FW> properly coordinate the issue with OEM vendors.

-- 
~/ZARAZA
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