dbcve.org
FirefoxWeb browser · Mozilla

CVE-2012-0467

HIGH · 10.0 CVSS v2.0 Published 2012-04-25
Fix available
A fix is available. Upgrade to after 2.9 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 the browser engine in Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0 through 11.0, Thunderbird ESR 10.x before 10.0.4, and SeaMonkey before 2.9 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

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 · high confidence

Multiple memory corruption vulnerabilities in the Mozilla Gecko browser engine affecting Firefox 4.x-11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0-11.0, Thunderbird ESR 10.x before 10.0.4, and SeaMonkey before 2.9. Remote attackers can cause denial of service through application crashes or potentially execute arbitrary code via unknown vectors.

MitigationUpgrade to Firefox 11.0 or later (or Firefox ESR 10.0.4+), Thunderbird 11.0 or later (or Thunderbird ESR 10.0.4+), or SeaMonkey 2.9 or later to patch the browser engine vulnerabilities.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

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:= 4.0= 4.0.1= 5.0= 5.0.1= 6.0= 6.0.1= 6.0.2= 7.0= 7.0.1= 8.0= 8.0.1= 9.0
ThunderbirdApplication
Affected:= 5.0= 6.0= 6.0.1= 6.0.2= 7.0= 7.0.1= 8.0= 9.0= 9.0.1= 10.0= 10.0.1= 10.0.2
Thunderbird EsrApplication
Affected:= 10.0= 10.0.1= 10.0.2= 10.0.3
SeamonkeyApplication
Affected:<= 2.9= 1.0= 1.0.1= 1.0.2= 1.0.3= 1.0.4= 1.0.5= 1.0.6= 1.0.7= 1.0.8= 1.0.9= 1.1

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed Mozilla product
    Check which Mozilla browser or messaging application is installed. Common products include Firefox, Thunderbird, or SeaMonkey. On Windows, look in Program Files; on Linux, check /usr/bin or ~/.local/bin; on macOS, check /Applications.
    Affected if Any of the affected products (Firefox, Thunderbird, or SeaMonkey) are found installed
  2. Check Firefox version
    For Firefox, type 'about:support' in the address bar or run 'firefox --version' from command line. The version is displayed on the page or terminal output.
    Affected if Version is 4.0, 4.0.1, 5.0, 5.0.1, 6.0, 6.0.1, 6.0.2, 7.0, 7.0.1, 8.0, 8.0.1, or 9.0 (any of the listed affected versions)
  3. Check Thunderbird version
    For Thunderbird, type 'about:support' in the address bar or run 'thunderbird --version' from command line. The version is displayed on the page or terminal output.
    Affected if Version is 5.0, 6.0, 6.0.1, 6.0.2, 7.0, 7.0.1, 8.0, 9.0, 9.0.1, 10.0, 10.0.1, or 10.0.2 (any of the listed affected versions)
  4. Check Thunderbird ESR version
    For Thunderbird ESR, run 'thunderbird --version' from command line or check the application help/about dialog. ESR versions contain 'ESR' in the version string.
    Affected if Version is 10.0, 10.0.1, 10.0.2, or 10.0.3 (any ESR 10.x version before 10.0.4)
  5. Check SeaMonkey version
    For SeaMonkey, run 'seamonkey --version' from command line, check Help > About SeaMonkey, or look for the version in the application log or registry on Windows.
    Affected if Version is 2.9 or any earlier version (1.0 through 1.1 series, or 2.0-2.8)

A user is affected if the installed Firefox, Thunderbird, Thunderbird ESR, or SeaMonkey version matches any of the specific versions or version ranges listed as affected for CVE-2012-0467.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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
Upgrade available Upgrade to a release after 2.9
Interim mitigation

Upgrade to Firefox 11.0 or later (or Firefox ESR 10.0.4+), Thunderbird 11.0 or later (or Thunderbird ESR 10.0.4+), or SeaMonkey 2.9 or later to patch the browser engine vulnerabilities.

Recommended fix High confidence

Firefox 12.0+ or Firefox ESR 10.0.4+; Thunderbird 12.0+ or Thunderbird ESR 10.0.4+; SeaMonkey 2.9+

  1. 1. Check current installed version by going to Help > About Firefox/Thunderbird/SeaMonkey
  2. 2. Download the latest stable release from the official Mozilla website (mozilla.org) for your operating system
  3. 3. Close all running browser/email client instances
  4. 4. Run the installer for the new version
  5. 5. After installation, verify the version in Help > About to confirm upgrade success
  6. 6. Consider migrating profile data to a supported, maintained release branch such as Firefox ESR (current stable)
Caveat This is a major version upgrade across multiple release generations; some legacy extensions or plugins may be incompatible with the newer version

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

Fix this in Firefox Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,540
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,464.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2012-0467 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2012-0467 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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