Full Disclosure mailing list archives
MSIE7 browser entrapment vulnerability (probably Firefox, too)
From: Michal Zalewski <lcamtuf () dione ids pl>
Date: Fri, 23 Feb 2007 02:29:00 +0100 (CET)
There is a cool combination-type vulnerability in MSIE7 that allows the attacker to: a) Trap the visitor in a Matrix-esque tarpit webpage that cannot be left by normal means (this is a known brain-damaged design of onUnload Javascript handlers), b) Spoof transitions between pages so that the user thinks he actually managed to leave the affected site, and so that the URL bar displays other addresses we didn't actually go to. This opens a plethora of spoofing / phishing scenarios, and is generally quite nasty. More information and a pretty demo is available here: http://lcamtuf.coredump.cx/ietrap/ Firefox isn't outright vulnerable to this problem, but judging from its behavior, it is likely to be susceptible to a variant of this bug (it exhibits the same behavior, but we end up with a corrupted page instead); I will research it once I get some sleep. Cheers, /mz _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- MSIE7 browser entrapment vulnerability (probably Firefox, too) Michal Zalewski (Feb 22)
- Re: MSIE7 browser entrapment vulnerability (probably Firefox, too) Michal Zalewski (Feb 23)
- Firefox: onUnload tailgating (MSIE7 entrapment bug variant) Michal Zalewski (Feb 23)
- Re: MSIE7 browser entrapment vulnerability (probably Firefox, too) Jeffrey Katz (Feb 24)
- Re: MSIE7 browser entrapment vulnerability (probably Firefox, too) Michal Zalewski (Feb 26)
- Re: MSIE7 browser entrapment vulnerability (probably Firefox, too) Matt S (Feb 26)