Forums Bug Reports Unhandled exception at 0x004edf60 in mirc.exe

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

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,

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

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..

Ok, if you're certain

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

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

I've gotten the same error several times since installing v6.11

P4 1.3GHz
384MB RAM
XP Professional SP1
mIRC 6.11

is this caused by the dcc exploit by anychance?

I don't know, this has only been happening since I installed 6.11

The exploit was only found yesterday...

This is an mIRC issue; a specially crafted DCC SEND will crash mIRC. It can be done remotely.

me too it start to happen yesterday

It's a DCC exploit.

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