funsec mailing list archives
Re: Facebook Image Privacy
From: Dan Kaminsky <dan () doxpara com>
Date: Sun, 17 Jan 2010 20:38:20 +0100
On Sun, Jan 17, 2010 at 8:16 PM, Imri Goldberg <lorgandon () gmail com> wrote:
On Sun, Jan 17, 2010 at 9:08 PM, Dan Kaminsky <dan () doxpara com> wrote:And a computer that isn't at the bottom of the Mariana Trench ain't secure. Unguessable tokens have a long history of use in our field (CSRF tokens, etc) and having one lock access to an image is relatively legitimate. If there was a way to guess the token, we'd say there was an issue.I think the difference is how long you expect that token to be kept. The link given, afaict, is a permanent one, unlike csrf tokens or various change password tokens.
It's a password to a single asset, which is retrieved in its entirety. If you allow "omg, somebody could share the link" to be considered a security hole, then I can see the stories now... "OMG! Save Picture!" "OMG! Print Screen!" "OMG! SOMEBODY COULD TAKE A PHOTO OF THEIR SCREEN!" :)
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Current thread:
- Facebook Image Privacy Larry Seltzer (Jan 17)
- Re: Facebook Image Privacy Vincent Hoffman (Jan 17)
- Re: Facebook Image Privacy Imri Goldberg (Jan 17)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 17)
- Re: Facebook Image Privacy Imri Goldberg (Jan 17)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 17)
- Re: Facebook Image Privacy Larry Seltzer (Jan 17)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 17)
- Re: Facebook Image Privacy Vaughn, Randal L. (Jan 17)
- Re: Facebook Image Privacy Alex Eckelberry (Jan 17)
- Re: Facebook Image Privacy Blue Boar (Jan 18)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 18)
- Re: Facebook Image Privacy Blue Boar (Jan 18)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 18)
- Re: Facebook Image Privacy Blue Boar (Jan 18)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 18)
- Re: Facebook Image Privacy Dan Kaminsky (Jan 17)