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FirefoxWeb browser · Mozilla

CVE-2024-11706

MEDIUM · 6.5 CVSS v3.1 Published 2024-11-26
Fix available
A fix is available. Upgrade to 133.0 or later.
See remediation →
72/100
Remediation priority · Elevated
Remotely reachable No privileges

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
A null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `SEC_ASN1DecodeItem_Util` function, when handling malformed or improperly formatted input files. This vulnerability affects Firefox < 133 and Thunderbird < 133.

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 · moderate confidence

A null pointer dereference vulnerability exists in the pk12util tool's SEC_ASN1DecodeItem_Util function when parsing malformed or improperly formatted input files. This could allow an attacker to cause a denial of service by tricking a user into processing a specially crafted PKCS#12 file.

MitigationUpgrade to Firefox 133 or Thunderbird 133 or later. Avoid opening untrusted or malformed PKCS#12 files with vulnerable versions.

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:< 133.0
ThunderbirdApplication
Affected:< 133.0

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
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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 products
    Check if Firefox or Thunderbird is installed on the system. On Windows, look in Program Files. On macOS, check /Applications. On Linux, check with package manager or locate firefox or thunderbird binaries.
    Affected if Either Firefox or Thunderbird is installed
  2. Check Firefox version
    Run 'firefox --version' from command line, or open Firefox and go to Help > About Firefox to view the version number.
    Affected if The installed version is lower than 133.0 (for example, 132.x, 132.0.1, etc.)
  3. Check Thunderbird version
    Run 'thunderbird --version' from command line, or open Thunderbird and go to Help > About Thunderbird to view the version number.
    Affected if The installed version is lower than 133.0 (for example, 132.x, 132.0.1, etc.)
  4. Determine if pk12util is used
    Check if pk12util tool is available on the system (common in NSS toolkit installations). Look for the tool in system PATH or in Mozilla program directories.
    Affected if pk12util is present and used to process PKCS#12 files
  5. Assess PKCS#12 file handling exposure
    Determine if the system or its users routinely import or process PKCS#12 certificate files, which are commonly used for certificate import/export operations.
    Affected if Users routinely process PKCS#12 files from untrusted sources

You are affected if you have Firefox or Thunderbird installed with a version lower than 133.0 and you or your users process PKCS#12 certificate files.

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 133.0 or later
Fixed in 133.0
Interim mitigation

Upgrade to Firefox 133 or Thunderbird 133 or later. Avoid opening untrusted or malformed PKCS#12 files with vulnerable versions.

Recommended fix High confidence

Firefox 133.0 or Thunderbird 133.0

  1. Open Firefox and go to Help > About Firefox to check current version
  2. If version is below 133.0, click 'Update to the latest version' or download Firefox 133.0 from www.mozilla.org
  3. Restart Firefox after the update completes
  4. For Thunderbird users: Open Thunderbird and go to Help > About Thunderbird to check current version
  5. If Thunderbird version is below 133.0, click 'Update to the latest version' or download Thunderbird 133.0 from www.mozilla.org
  6. Restart Thunderbird after the update completes

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
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

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-2024-11706 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