Closed Bug 246476 Opened 17 years ago Closed 16 years ago
*** Bug 246519 has been marked as a duplicate of this bug. ***
Assignee: firefox → dveditz
Severity: normal → major
Component: General → Security: General
OS: Windows 2000 → All
Product: Firefox → Browser
QA Contact: firefox.general
Version: unspecified → Trunk
This change would break legitimate sites and would not make Cross Site Request Forgery attacks much harder.
Jesse: you could argue that blocking popups "breaks legitimate sites" too, but this is a popular feature because it prevents sites from taking control of aspects of the browser that the user would rather remain in control of. Can you give an example of legitimate use of automatically submitted forms without user interaction? If this is an issue then perhaps a whitelist mechanism similar to that used for popups would be appropriate too. In general I can't see why this behaviour should be allowed by default though. At the very least it ought to generate a warning and be cancellable. Can you also give an example of how such an attack might bypass the block I propose? (Without social engineering. If you can persuade the user to deliberately run the exploit for you, there is no hope.) (I should stress that I don't believe this is a complete solution: the target sites *need* to protect themselves too, however in the absence of such protection this would put the user back in control. It's a useful extra measure, security in depth.)
Note that bug 246519 discusses a solution to this problem that has not been discussed here which may be more palatable.
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Status: UNCONFIRMED → RESOLVED
Closed: 16 years ago
Resolution: --- → WONTFIX
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