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FirefoxWeb browser · Mozilla

CVE-2009-3379

HIGH · 10.0 CVSS v2.0 Published 2009-10-29
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Multiple unspecified vulnerabilities in libvorbis, as used in Mozilla Firefox 3.5.x before 3.5.4, allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via unknown vectors. NOTE: this might overlap CVE-2009-2663.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
FirefoxWeb browser
Affected:= 3.5.1= 3.5.2= 3.5.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch www.mozilla.org →
Recommended fix High confidence

Firefox 3.5.4 or later (preferably the latest stable Firefox release)

  1. Back up Firefox bookmarks, passwords, and important data using the current Firefox installation
  2. Download Firefox 3.5.4 or later from the official Mozilla website (www.mozilla.org)
  3. Install Firefox 3.5.4 by running the installer
  4. Launch the upgraded Firefox and verify the version in Help > About Firefox
  5. Ensure any Firefox extensions/plugins are compatible with the new version
Caveat Firefox 3.5.4 is a very old version from 2009; upgrading to modern Firefox may require adjusting to interface changes and may require updated versions of legacy extensions

Generated from the published advisory — verify against the referenced sources before acting.

We can apply and verify the patch for your build — typical engagement from $1,950. Get the patch applied

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2009-3379 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data