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Mozilla Foundation Security Advisory 2005-07

Title: Script-generated event can download without prompting
Severity: High (Firefox)
Reporter: Omar Khan
Products: Firefox

Fixed in: Firefox 1.0


Script-generated click events were indistinguishable from true clicks. Combined with the Firefox Alt+click feature that downloads links to the default location without prompting this could be used by malicious sites to place executables or other malware onto a windows user's desktop without their knowing, or simply attempt to fill their disk.

Mozilla 1.7.5 was also fixed to distinguish synthetic from true clicks, but didn't suffer from unprompted downloads.


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