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[Full-disclosure] JAR: protocol vulnerability in Firefox, word processing applications reported

From: Juha-Matti Laurio (juha-matti.laurionetti.fi)
Date: Thu Nov 08 2007 - 18:16:45 CST


An unpatched vulnerability in handling of JAR: protocol handler URL’s has been reported recently.

Information is available at GNUCITIZEN Blog via entry "Web Mayhem: Firefox’s JAR Protocol Issues".

Information was publicly disclosed by Petko D Petkov (aka pdp).
The issue was originally reported in Bugzilla document #369814 by Jesse Ruderman of Mozilla community.
I.e. it's worth of mentioning that Mozilla security group is aware of the vulnerability.

Shortly: the vulnerability is due to same origin and XSS issues when opening .JAR packages.
The following file formats are known attack vectors: .zip, .doc, and .odt.
Information about OpenOffice.org and MS Office via pdp's post.

References:
http://www.gnucitizen.org/blog/web-mayhem-firefoxs-jar-protocol-issues
http://blogs.securiteam.com/index.php/archives/1033

- Juha-Matti

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