Bitcoin Forum
August 15, 2018, 01:47:48 AM *
News: Latest stable version of Bitcoin Core: 0.16.2  [Torrent].
   Home   Help Search Donate Login Register  
Pages: [1]
Author Topic: offsite profile image risks  (Read 646 times)
Jr. Member
Offline Offline

Activity: 59
Merit: 0

Don't everyone thank me at once.

View Profile
June 22, 2011, 06:55:04 PM

When viewing this thread..;topicseen

..I got an HTTP login prompt, apparently because the page was trying to display this image from someone's profile..

An unsophisticated user might enter their credentials into that prompt.

More generally, loading offsite images is an information leak (IP addresses of forum readers) and possibly even security risk (if any browser image-handling flaw would let the source site do more, such as redirect to some other site's XSS CSRF flaw, run JS, or in a worst-case, buffer-overflow for local code execution).

I suggest in our new security-conscious era, loading of offsite images as profile icons be disabled.

Never tell me the odds. ⓑ 1J5wQvCz2mn3f4TxPFtExKs253GyeKKkBb
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
Hero Member
Offline Offline

Posts: 1534297668

View Profile Personal Message (Offline)

Reply with quote  #2

Report to moderator
Hero Member
Offline Offline

Activity: 812
Merit: 1000

No Maps for These Territories

View Profile
June 22, 2011, 07:04:13 PM


also links to external HTTP images break the lock icon in HTTPS connections

Bitcoin Core developer [PGP] Warning: For most, coin loss is a larger risk than coin theft. A disk can die any time. Regularly back up your wallet through FileBackup Wallet to an external storage or the (encrypted!) cloud. Use a separate offline wallet for storing larger amounts.
Mark Oates
Full Member
Offline Offline

Activity: 168
Merit: 100

View Profile
June 23, 2011, 12:36:22 AM

Agreed.  For best security, images should be uploaded and/or cached/pulled from the server before being displayed.

Not to mention image signatures are annoying as crap.
Pages: [1]
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!