Re: how to determine the actual file format of an image file?

This WebDNA talk-list message is from

2002


It keeps the original formatting.
numero = 44571
interpreted = N
texte = >does anyone know how to determine the actual file format of an image file that has been uploaded? > >I do not wish to rely just on the file extension as supplied by the user. >FWIW, there's a possibility that a jpg extension can mask a exe file, but it's not a big threat so far.http://www.itsecure.com.au/news/story.htm?StoryID=190------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/ Associated Messages, from the most recent to the oldest:

    
  1. Re: how to determine the actual file format of an image file? (Rob Marquardt 2002)
  2. Re: how to determine the actual file format of an image file?- done (dale's stuff 2002)
  3. Re: how to determine the actual file format of an image file? (dale's stuff 2002)
  4. Re: how to determine the actual file format of an image file? (Jason Tyler 2002)
  5. Re: how to determine the actual file format of an image file? (dale's stuff 2002)
  6. Re: how to determine the actual file format of an image file? (Rob Marquardt 2002)
  7. Re: how to determine the actual file format of an image file? (Glenn Busbin 2002)
  8. Re: how to determine the actual file format of an image file? (Frank Nordberg 2002)
  9. Re: how to determine the actual file format of an image file? (Brian Boegershausen 2002)
  10. Re: how to determine the actual file format of an image file? (Alain Russell 2002)
  11. Re: how to determine the actual file format of an image file? (dale's stuff 2002)
  12. Re: how to determine the actual file format of an image file? (Rob Marquardt 2002)
  13. how to determine the actual file format of an image file? (dale's stuff 2002)
>does anyone know how to determine the actual file format of an image file that has been uploaded? > >I do not wish to rely just on the file extension as supplied by the user. >FWIW, there's a possibility that a jpg extension can mask a exe file, but it's not a big threat so far.http://www.itsecure.com.au/news/story.htm?StoryID=190------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/ Glenn Busbin

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