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FirefoxWeb browser · Mozilla

CVE-2013-1680

HIGH · 10.0 CVSS v2.0 Published 2013-05-16
Fix available
A fix is available. Upgrade to after 20.0.1 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
Use-after-free vulnerability in the nsFrameList::FirstChild function in Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified 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

Use-after-free vulnerability in Mozilla Firefox and Thunderbird's nsFrameList::FirstChild function allows remote attackers to execute arbitrary code via heap memory corruption. The vulnerability exists in unspecified vectors within the browser rendering engine.

MitigationUpgrade to Firefox 21.0 or later, Firefox ESR 17.0.6 or later, Thunderbird 17.0.6 or later, or Thunderbird ESR 17.0.6 or later.

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:<= 20.0.1= 19.0= 19.0.1= 19.0.2= 20.0= 17.0= 17.0.1= 17.0.2= 17.0.3= 17.0.4= 17.0.5
ThunderbirdApplication
Affected:<= 17.0.5= 17.0= 17.0.1= 17.0.2= 17.0.3= 17.0.4
Thunderbird EsrApplication
Affected:= 17.0= 17.0.1= 17.0.2= 17.0.3= 17.0.4= 17.0.5

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 installed Mozilla product
    Check if Firefox or Thunderbird is installed. On Windows, look in Program Files. On macOS, check /Applications. On Linux, check for firefox or thunderbird packages.
    Affected if Either Firefox or Thunderbird is installed
  2. Check Firefox version number
    Open Firefox, click Help > About Firefox, or navigate to about:support in the address bar. Note the version number shown (e.g., 20.0.1, 19.0.2, 17.0.5).
    Affected if Version is 20.0.1 or lower, or is 19.0, 19.0.1, 19.0.2, 20.0, or any 17.0.x version through 17.0.5
  3. Check Thunderbird version number
    Open Thunderbird, click Help > About Thunderbird, or navigate to about:support in the address bar. Note the version number shown (e.g., 17.0.4, 17.0.5).
    Affected if Version is 17.0.5 or lower, including any 17.0, 17.0.1, 17.0.2, 17.0.3, or 17.0.4 (both standard and ESR editions)
  4. Confirm no specific feature workaround exists
    This vulnerability is in the core rendering engine (nsFrameList::FirstChild function) and is triggered by malformed content processed by the browser. There is no configuration toggle or setting that prevents it - the issue exists in the affected versions regardless of user settings.
    Affected if Running an affected version means the vulnerability is present; no browser settings can mitigate it

A user is affected if they are running Firefox 20.0.1 or lower, any Firefox 17.0.x version, or Thunderbird 17.0.5 or lower (including Thunderbird ESR 17.0.x).

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 20.0.1
Interim mitigation

Upgrade to Firefox 21.0 or later, Firefox ESR 17.0.6 or later, Thunderbird 17.0.6 or later, or Thunderbird ESR 17.0.6 or later.

Recommended fix High confidence

Firefox 21.0+, Firefox ESR 17.0.6+, Thunderbird 17.0.6+, or Thunderbird ESR 17.0.6+

  1. Check the current installed version of Firefox or Thunderbird by opening the application and navigating to Help > About (or the equivalent menu)
  2. Identify which product and version is installed (Firefox, Firefox ESR, Thunderbird, or Thunderbird ESR)
  3. For Firefox users: Download and install Firefox 21.0 or later from the official Mozilla website (mozilla.org/firefox)
  4. For Firefox ESR users: Download and install Firefox ESR 17.0.6 or later from Mozilla's ESR download page
  5. For Thunderbird users: Download and install Thunderbird 17.0.6 or later from the official Mozilla website (mozilla.org/thunderbird)
  6. For Thunderbird ESR users: Download and install Thunderbird ESR 17.0.6 or later from Mozilla's ESR download page
  7. Close and fully restart the application after installation
  8. Verify the installed version by checking Help > About to confirm the version number matches the fixed release
Caveat Minor - Upgrading to a new major version may introduce minor UI changes; ensure compatibility with any required add-ons or extensions

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

Fix this in Firefox Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing3.0 h
  • Review / QA3.0 h
18.0 hours of engineering $3,230
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Scan for this in your stack

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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-2013-1680 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