CVE-2009-5017

Public Exploit

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.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.17%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=511859 patch
https://bugzilla.mozilla.org/show_bug.cgi?id=522634
http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html exploit
http://hg.mozilla.org/releases/mozilla-1.9.2/rev/e42c563313a0

Frequently Asked Questions

What is the severity of CVE-2009-5017?
CVE-2009-5017 has been scored as a medium severity vulnerability.
How to fix CVE-2009-5017?
To fix CVE-2009-5017, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-5017 being actively exploited in the wild?
It is possible that CVE-2009-5017 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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