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[aprssig] OT RE: Irfanview and DEP (was APRS Frequency info?)

Ray Wells vk2tv at exemail.com.au
Tue Jul 8 04:13:54 UTC 2008


Gusee I'd better keep my fingers crossed to ensure my run of luck continues.

Ray vk2tv

Dave Baxter wrote:

>Hi...
>
>The problem is fairly well known.  Some (I don't know about any later)
>versions of Irfan view, internally executes run time code, read into
>data buffers.  In this case it's intentional, and part of the way the
>program was written.  I won't go into if it's good/bad practice, but it
>was a common thing to do in the past...
>
>Anyway, it's also a common way for unintended visitors to begin to hack
>your PC, the so called buffer overrun, resulting in code being executed
>in a data area.
>
>"DEP" or Data Execution Protection is one way to prevent that.  Some
>high end CPU's can do that if programmed up the correct way, some
>versions of Windowz can do something similar (they say) in software.
>Either way, Irfanview (an otherwise very versatile image manipulator)
>will fail to run, and bring up warning messages etc... 
>
>An alternative (though not free) very good program could be Paint Shop
>Pro.  But later versions are mind bogglingly complex!.
>
>73.
>
>Dave G0WBX.
>
>  
>
>>-----Original Message-----
>>From: Ray Wells [mailto:vk2tv at exemail.com.au] 
>>Sent: 07 July 2008 09:28
>>To: TAPR APRS Mailing List
>>Subject: Re: [aprssig] APRS Frequency info?
>>
>>Never had an issue with Irfanview here but then I don't trust 
>>Microshaft to protect my computer.
>>
>>Ray vk2tv
>>
>>Dave Baxter wrote:
>>
>>    
>>
>>>Hi...
>>>
>>>Note that Irfanview can seriously "P" off some security/AV system 
>>>programs, particularly those that check for programs that 
>>>      
>>>
>>run code in 
>>    
>>
>>>data buffers (DEP).  It's doubtful Irfanview is malicious, but take
>>>care.   Some versions of Vista, and later incarnations of XP with all
>>>security settings enabled, may complain, or even prevent it running.
>>>
>>>
>>>________________________________
>>>
>>>From: Stephen H. Smith [mailto:wa8lmf2 at aol.com]
>>>Sent: 05 July 2008 06:03
>>>To: bruninga at usna.edu; TAPR APRS Mailing List
>>>Subject: Re: [aprssig] APRS Frequency info?
>>>	 
>>>	.
>>>	.
>>>	.
>>>	 
>>>Then twiddle the resulting images in Photoshop.  Jack up the 
>>>      
>>>
>>contrast, 
>>    
>>
>>>crop and resize from it's native multi-megapixel resolution to 
>>>something like 320x240, reduce the color depth from photographic 
>>>high-color to 256 colors (you'll never notice the difference 
>>>      
>>>
>>on screen 
>>    
>>
>>>shots or images of
>>>maps) and save as a GIF image.  If you don't have PhotoShop, the 
>>>freeware IrfanView program from <http://irfanview.com> 
>>><http://irfanview.com>  can perform these operations just 
>>>      
>>>
>>about as well.
>>    
>>
>>>	
>>>    <http://www.nvu.com/>     
>>>
>>>That sounds nice, I intend to take a good look at that later, What's 
>>>the "unoficial bugfix" version (KomPozer) like?
>>>
>>>73
>>>
>>>Dave G0WBX
>>> 
>>>	
>>>	  
>>>
>>>This mail has been scanned by Palmer Cook Computer Services 
>>>      
>>>
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>>    
>>
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>>>
>>>      
>>>
>>
>>
>>    
>>
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>  
>





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