CVE-2009-5017

Published: Nov 12, 2010Modified: Apr 29, 2026

4.3

Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability: 8.6 / Impact: 2.9

Source: NVD

Description

Mozilla Firefox before 3.6 Beta 3 does not properly handle overlong UTF-8 encoding, which makes it easier for remote attackers to bypass cross-site scripting (XSS) protection mechanisms via a crafted string, a different vulnerability than CVE-2010-1210.

Affected (2)

Products: Mozilla: Firefox

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Up to 3.6
Mozilla Firefox	Version 3.6 beta1

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (8)

http://hg.mozilla.org/releases/mozilla-1.9.2/rev/e42c563313a0

Source: cve@mitre.org

http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html

Source: cve@mitre.org

Exploit

https://bugzilla.mozilla.org/show_bug.cgi?id=511859

Source: cve@mitre.org

Patch

https://bugzilla.mozilla.org/show_bug.cgi?id=522634

Source: cve@mitre.org

http://hg.mozilla.org/releases/mozilla-1.9.2/rev/e42c563313a0

Source: af854a3a-2127-422b-91ae-364da2661108

http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit

https://bugzilla.mozilla.org/show_bug.cgi?id=511859

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

https://bugzilla.mozilla.org/show_bug.cgi?id=522634

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.