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2003: 2,700 advisories published
2004: 3,100 advisories published
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TITLE:
Mozilla Firefox "jar:" Protocol Handling Cross-Site Scripting
Security Issue

SECUNIA ADVISORY ID:
SA27605

VERIFY ADVISORY:
http://secunia.com/advisories/27605/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Mozilla Firefox 2.0.x
http://secunia.com/product/12434/

DESCRIPTION:
A security issue has been reported in Mozilla Firefox, which can be
exploited by malicious people to conduct cross-site scripting
attacks.

The problem is that the "jar:" protocol handler does not validate the
MIME type of the contents of an archive, which are then executed in
the context of the site hosting the archive. This can be exploited to
conduct cross-site scripting attacks on sites that allow a user to
upload certain files (e.g. .zip, .png, .doc, .odt, .txt).

SOLUTION:
Do not follow untrusted "jar:" links or browse untrusted websites.

PROVIDED AND/OR DISCOVERED BY:
Reported by Jesse Ruderman in a Bugzilla entry.

Independently discovered by pdp.

ORIGINAL ADVISORY:
Mozilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=369814

GNUCITIZEN:
http://www.gnucitizen.org/blog/web-mayhem-firefoxs-jar-protocol-issues

OTHER REFERENCES:
US-CERT VU#715737:
http://www.kb.cert.org/vuls/id/715737

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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