Published:2007/06/01  Last Updated:2008/05/21

Mozilla Firefox cross-site scripting vulnerability


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

Products Affected

  • Firefox prior to version
  • Firefox prior to version


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


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


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


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


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

Other Information

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

Update History