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From: khermansen at ht-technology.com (Kristian Hermansen) Subject: RE: Yahoo Instant Messenger YAUTO.DLL buffer overflow Yeah, but mentally they (and you) are all under 20 or else you would not be subscribed to this "pathetic" kiddie list... Kristian Hermansen khermansen@...technology.com -----Original Message----- From: full-disclosure-admin@...ts.netsys.com [mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of dave kleiman Sent: Thursday, December 04, 2003 11:53 AM To: 'Kristian Hermansen'; full-disclosure@...ts.netsys.com Subject: RE: [Full-Disclosure] RE: Yahoo Instant Messenger YAUTO.DLL buffer overflow Is there actually anyone on the list who is over the age of 20? _______________________________ Dave Kleiman, CISSP, MCSE, CIFI dave@...cureu.com www.SecurityBreachResponse.com "High achievement always takes place in the framework of high expectation." Jack Kinder -----Original Message----- From: full-disclosure-admin@...ts.netsys.com [mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of Kristian Hermansen Sent: Thursday, December 04, 2003 10:56 To: full-disclosure@...ts.netsys.com Subject: RE: [Full-Disclosure] RE: Yahoo Instant Messenger YAUTO.DLL buffer overflow Dude, thanks for the calc tips!!! LATE makes perfect sense ;-) Kristian Hermansen khermansen@...technology.com -----Original Message----- From: List Account [mailto:list.account@...dant.com] Sent: Thursday, December 04, 2003 10:41 AM To: 'Kristian Hermansen' Subject: RE: [Full-Disclosure] RE: Yahoo Instant Messenger YAUTO.DLL buffer overflow Funny you should be talking about Calculus, I'm finishing 152 now (finals next week). Integration by parts not that bad. Here's a tip; LATE Logs Algebraic Trig Exponentials What this is for is to find u, so that du will be something simpler. So to use LATE to find u, try them in order, i.e. is there a ln? No, then is there an algebraic function you can integrate?, etc. HTH, Nathan -----Original Message----- From: full-disclosure-admin@...ts.netsys.com [mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of Kristian Hermansen Sent: Thursday, December 04, 2003 9:19 AM To: full-disclosure@...ts.netsys.com Subject: RE: [Full-Disclosure] RE: Yahoo Instant Messenger YAUTO.DLL buffer overflow OMFG Tri, hahahahaha!!! Remember when you couldn't figure out who hijacked yer mail/Paypal accounts? Looks like we know who did it now. Did he take any money from yer Paypal account? I do agree with one thing that he said..."Stop leaking and killing my bug kid. Go to school to learn more." Dude you missed calculus class again and don't forget we are doing integration by parts/series this week/next week. Maybe you aren't as slick as I thought you were. Stealing bugs from other people? Dude, I had a lot of respect for you...but now...I'm just not so sure about your "integrity". Are you really finding these bugs with OllyDebug/IDAPro, or are you monitoring security researchers email accounts to get your info? Dude, I only ask because I believe everyone here has the right to know... Kristian Hermansen khermansen@...technology.com -----Original Message----- From: full-disclosure-admin@...ts.netsys.com [mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of De Blanc Sent: Thursday, December 04, 2003 2:17 AM To: full-disclosure@...ts.netsys.com Cc: bugtraq@...urityfocus.com Subject: Re: [Full-Disclosure] RE: Yahoo Instant Messenger YAUTO.DLL buffer overflow Yeah! Yahoo is sux. Yahoo Messenger has tons of bugs. But you are more sux than yahoo since you stole my work and posted my found bug to yahoo and bugtraq. Funny enough when your little company SentryUnion is trying to sell "Indetify Theft" protection service but you got owned, stole mail and money from your paypal account, logged everything your chatted with gf via one another yahoo messenger 0day. Stop leaking and killing my bug kid. Go to school to learn more. The Blanc <trihuynh@...up.com> wrote: >Hi all, >This bug is a lame bug, very lame actually. I release it in order to >show that how a big company don't even do a basic QA. If we look through >the security records of YIM, almost any YIM's ActiveX/Com >components do have some kind of buffer overflow and it is very easy >to spot them too (by fuzzing the IDispatch interface). I have no idea >how can QA guys in the YIM project can manage to let these >dangerous bugs survival through the testing state. Maybe they >are so busy watching the new "Joe Millionaire" show :-)))) >Trihuynh >Sentryunion >-----Original Message----- >From: full-disclosure-admin@...ts.netsys.com >[mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of Tri Huynh >Sent: Wednesday, December 03, 2003 10:07 >To: full-disclosure@...ts.netsys.com; bugtraq@...urityfocus.com >Cc: bugs@...uritytracker.com; news@...uriteam.com; vuln@...unia.com >Subject: [Full-Disclosure] Yahoo Instant Messenger YAUTO.DLL buffer overflow > >Yahoo Instant Messenger YAUTO.DLL buffer overflow >================================================= >PROGRAM: Yahoo Instant Messenger (YIM) >HOMEPAGE: http://messenger.yahoo.com >VULNERABLE VERSIONS: 5.6.0.1347 and below > >DESCRIPTION >================================================= >YIM is one of the most popular instant messenger. This is a cool product, >that allows me to chat with my gf from a very long distant :-). > >DETAILS >================================================= >YAUTO.DLL is an ActiveX/COM component that comes with Yahoo Install >Messenger. YAUTO.DLL is registered under a ProgID called "YAuto.NSAuto.1". >In this component, there is a function named Open(String Url) that will >cause a buffer overflow if argument Url is passed with a long string. Since >this is an ActiveX component, the vulnerability can be exploited just by >making a website with the correct CLSID of the ActiveX and call the function >directly. We have successfully exploited the vulnerability by making a >website that can download a trojan and execute it silently. > >WORKAROUND >================================================= >Yahoo has been contacted at enterprisesales@...oo-inc.com (this is the only >email that I can find on the Yahoo Messenger Site) but doesn't response >after 1 month. The workaround solution is deleting the YAUTO.DLL file in >your YIM directory. > >CREDITS >================================================= >Discovered by Tri Huynh from SentryUnion > >DISLAIMER >================================================= >The information within this paper may change without notice. Use of this >information constitutes acceptance for use in an AS IS condition. There are >NO warranties with regard to this information. In no event shall the author >be liable for any damages whatsoever arising out of or in connection with >the use or spread of this information. Any use of this information is at the >user's own risk. > >FEEDBACK >================================================= >Please send suggestions, updates, and comments to: trihuynh@...up.com >_______________________________________________ >Full-Disclosure - We believe in it. >Charter: http://lists.netsys.com/full-disclosure-charter.html > > >---------------------------------------------------------------- ---- >mail2web - Check your email from the web at http://mail2web.com/ . > >_______________________________________________ >Full-Disclosure - We believe in it. >Charter: http://lists.netsys.com/full-disclosure-charter.html __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/ _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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