Threat Level: green Handler on Duty: Richard Porter

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Firefox and IE Zero Days

Published: 2007-06-04
Last Updated: 2007-06-04 22:21:11 UTC
by Robert Danford (Version: 1)
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Michal Zalewski has reported several browser bugs worth alerting on

The information was posted to the Full-Disclosure mailing list and has been reported on in Computer World:

Thanks to several readers that made sure we took note.

Here is a brief summary of his report. Please refer to Full-Disclosure for more details:

1) Title : MSIE page update race condition (CRITICAL)
Impact : cookie stealing / setting, page hijacking, memory corruption
Affected : MSIE6 and MSIE7

2) Title : Firefox Cross-site IFRAME hijacking (MAJOR)
Impact : keyboard snooping, content spoofing, etc
Affected : Firefox 2.0

3) Title : Firefox file prompt delay bypass (MEDIUM)
Impact : non-consentual download or execution of files
Affected : Firefox v?.?

3) Title : MSIE6 URL bar spoofing (MEDIUM)
Impact : mimicking an arbitrary site, possibly including SSL data
Affected : MSIE6

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