CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS
Percentile
99.7%
Mozilla Firefox does not properly handle JavaScript onUnload
events. This vulnerability may lead to memory corruption that could allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
The JavaScript onUnload
event is executed when the browser exits a web page. An event handler can be installed via JavaScript to trap and process this event.
Mozilla Firefox fails to properly handle JavaScript onUnload
events. Specifically, Firefox may not correctly handle freed data structures modified in the onUnload
event handler, which could cause memory corruption.
By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user.
Upgrade
Firefox has addressed this issue in Firefox version 2.0.0.2 as well as Firefox 1.5.0.10. See Mozilla Foundation Security Advisory 2007-08 for more information
Disable JavaScript
Disabling JavaScript will prevent exploitation of this vulnerability. For instructions on disabling JavaScript in Mozilla Firefox, refer to the Mozilla Firefox section the Securing Your Web Browser document.
393921
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Updated: February 26, 2007
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Refer to <http://www.mozilla.org/security/announce/2007/mfsa2007-08.html>.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23393921 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
This vulnerability was publicly disclosed by Michal Zalewski.
This document was written by Jeff Gennari.
CVE IDs: | CVE-2007-1092 |
---|---|
Severity Metric: | 18.36 Date Public: |