JVN#38605899 Mozilla Firefox cross-site scripting vulnerability

Overview

Mozilla Firefox, web browser from Mozilla Corporation and Mozilla Japan, contains a cross-site scripting vulnerability.

Products Affected

Firefox prior to version 2.0.0.2
Firefox prior to version 1.5.0.10

Description

Mozilla Firefox interprets HTML data improperly and activates event handlers for invalid HTML elements, leading to a cross-site scripting vulnerability.

Impact

An arbitrary script may be executed on the user's web browser.

Solution

Upgrade the Software
Mozilla has released Firefox 2.0.0.2 and 1.5.0.10 which address this vulnerability. We recommend that users of the affected products upgrade to the fixed version of the software.

Vendor Status

Vendor	Link
Mozilla Japan	Mozilla Foundation Security Advisory 2007-02 (Japanese)
Mozilla	Mozilla Foundation Security Advisory 2007-02

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2007.06.01

Measures	Conditions	Severity
Access Required	Routed - can be attacked over the Internet using packets	High
Authentication	None - anonymous or no authentication (IP addresses do not count)	High
User Interaction Required	Simple - the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file	Medium
Exploit Complexity	Low - little to no expertise and/or luck required to exploit (cross-site scripting)	High

Description of each analysis measures

Credit

HASEGAWA, Yosuke of webappsec.jp reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendors under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE	CVE-2007-0995
JVN iPedia	JVNDB-2007-000176