CVE-2009-5017
medium
CVSS v3
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CVSS v4 NEW
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VIR risk
4.3
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- http://hg.mozilla.org/releases/mozilla-1.9.2/rev/e42c563313a0
- http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=511859
- https://bugzilla.mozilla.org/show_bug.cgi?id=522634
- http://hg.mozilla.org/releases/mozilla-1.9.2/rev/e42c563313a0
- http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=511859
- https://bugzilla.mozilla.org/show_bug.cgi?id=522634
CWEs
CWE-79
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.