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Unhandled exception at 0x004edf60 in mirc.exe #53960 12/10/03 05:12 PM
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accessx Offline OP
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mIRC keeps crashing at random times...( while connected to a server )

"Unhandled exception at 0x004edf60 in mirc.exe: 0xC0000005: Access violation reading location 0x00000011."

---> 004EDF60 mov bl,byte ptr [eax]
004EDF62 test bl,bl
004EDF64 jne 004EDEB5
004EDF6A mov byte ptr [ebp],0
004EDF6E pop edi
004EDF6F pop esi

I will reset my machine and try to find the cause...
mIRC Version 6.11

Win Xp Pro Sp 1
P4 2.59ghz
512MB ram

Re: Unhandled exception at 0x004edf60 in mirc.exe #53961 12/10/03 08:09 PM
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Mentality Offline
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I doubt that's anything to do with mIRC directly, despite it specifying mirc.exe - I'm using v6.11 too on Win XP Pro SP1...and I've never had any problems thus far.

Perhaps other programs are conflicting with it? Have you tried running mIRC on it's own without other programs running?

And does this happen as soon as you start mIRC up, or after mIRC has been running for awhile..or is it just completely random? You may also like to run a virus scan just to be safe, I used to have Illegal Operations occuring with my mIRC a couple of years ago and I actually had a virus.

Perhaps someone will, hopefully, understand all that Windows jargon :P

Good luck.

Regards,


Mentality/Chris
Re: Unhandled exception at 0x004edf60 in mirc.exe #53962 12/10/03 09:41 PM
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DekuHaze Offline
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This has all the classic hallmarks of a RAM problem. I suggest you find a program that can run a deep probe of your RAM smile

Re: Unhandled exception at 0x004edf60 in mirc.exe #53963 12/10/03 09:54 PM
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accessx Offline OP
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No ram problem.. using corisar xms pc3200 .. ram is good.. I'll keep a log to see what the last occured in mirc before it crashes (make sure it's not a remote vul).. The machine has been reset.... I'll try a fresh install too..

Re: Unhandled exception at 0x004edf60 in mirc.exe #53964 12/10/03 09:57 PM
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DekuHaze Offline
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Ok, if you're certain smile

Re: Unhandled exception at 0x004edf60 in mirc.exe #53965 12/10/03 11:52 PM
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accessx Offline OP
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It's been confirmed.. a user can crash mIRC remotely... the author/others probably already know of this attack.. it's in the form of a DCC SEND....
/ignore -d *

for now

Last edited by accessx; 13/10/03 12:13 AM.
Re: Unhandled exception at 0x004edf60 in mirc.exe #53966 13/10/03 12:00 AM
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J0ke Offline
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Quote:
mIRC keeps crashing at random times...( while connected to a server )

"Unhandled exception at 0x004edf60 in mirc.exe: 0xC0000005: Access violation reading location 0x00000011."


same here...

The instruction at "0x004edf60" refered memory at "0x00000011". The memory could not be "read".


mIRC 6.11
WinXP PRO SP1+
C2.2/512


Go ahead, jump. 100,000 lemmings can't be wrong.
Re: Unhandled exception at 0x004edf60 in mirc.exe #53967 13/10/03 01:36 AM
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I've gotten the same error several times since installing v6.11

P4 1.3GHz
384MB RAM
XP Professional SP1
mIRC 6.11

Last edited by Rats_; 13/10/03 01:43 AM.
Re: Unhandled exception at 0x004edf60 in mirc.exe #53968 13/10/03 01:59 AM
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_D3m0n_ Offline
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is this caused by the dcc exploit by anychance?


D3m0nnet.com
Re: Unhandled exception at 0x004edf60 in mirc.exe #53969 13/10/03 03:01 AM
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Rats_ Offline
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I don't know, this has only been happening since I installed 6.11

Re: Unhandled exception at 0x004edf60 in mirc.exe #53970 13/10/03 04:05 AM
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Ashkrynt Offline
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The exploit was only found yesterday...

Re: Unhandled exception at 0x004edf60 in mirc.exe #53971 13/10/03 05:54 AM
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TonyM Offline
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This is an mIRC issue; a specially crafted DCC SEND will crash mIRC. It can be done remotely.

Re: Unhandled exception at 0x004edf60 in mirc.exe #53972 13/10/03 01:36 PM
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johnnybegood Offline
Mostly harmless
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me too it start to happen yesterday

frown

Re: Unhandled exception at 0x004edf60 in mirc.exe #53973 13/10/03 02:08 PM
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trenzterra Offline
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It's a DCC exploit.


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Re: Unhandled exception at 0x004edf60 in mirc.exe #53974 13/10/03 07:34 PM
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argv0 Offline
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004EDF60 mov bl,byte ptr [eax]

yep. EAX is -1 (or 0xFFFFFF)
That's what's causing the crash on a system level.
On the programming level, it's caused by the way mIRC handles spaces in filenames when it receives a DCC request.
On the users level it's caused by someone exploiting you frown


- argv[0] on EFnet #mIRC
- "Life is a pointer to an integer without a cast"