dbcve.org
FirefoxWeb browser · Mozilla

CVE-2022-45410

MEDIUM · 6.5 CVSS v3.1 Published 2022-12-22
Fix available
A fix is available. Upgrade to 102.5 / 107.0 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
When a ServiceWorker intercepted a request with <code>FetchEvent</code>, the origin of the request was lost after the ServiceWorker took ownership of it. This had the effect of negating SameSite cookie protections. This was addressed in the spec and then in browsers. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

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

ServiceWorker request interception with FetchEvent caused origin information to be lost, bypassing SameSite cookie protections and potentially allowing cross-site request forgery attacks. This is a browser-level vulnerability in Firefox and Thunderbird where the service worker specification was not correctly preserving origin metadata.

MitigationUpdate affected products to Firefox >= 107, Firefox ESR >= 102.5, or Thunderbird >= 102.5. Organizations should ensure patch management deploys these browser updates to end users.

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:< 107.0
Firefox EsrWeb browser
Affected:< 102.5
ThunderbirdApplication
Affected:< 102.5

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

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

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
    Scan the system for Firefox and Thunderbird installations using system inventory tools, checking common installation directories (C:\Program Files\Mozilla Firefox on Windows, /Applications/Firefox on macOS, /usr/bin/firefox on Linux)
    Affected if Firefox or Thunderbird is present on the system
  2. Check Firefox version number
    In Firefox, navigate to about:support or about:firefox to display the version. On Linux, run 'firefox --version' in terminal. On Windows, check the registry key HKLM\SOFTWARE\Mozilla\Mozilla Firefox\CurrentVersion
    Affected if Firefox version is less than 107.0 for standard releases, or less than 102.5 for Firefox ESR releases
  3. Check Thunderbird version number
    In Thunderbird, go to Help > About to display the version. On Linux, run 'thunderbird --version' in terminal
    Affected if Thunderbird version is less than 102.5
  4. Confirm ServiceWorker usage (optional context)
    In Firefox, navigate to about:serviceworkers to see if any service workers are registered. This vulnerability affects requests intercepted by ServiceWorker handlers
    Affected if Service workers are active and the browser version is vulnerable

User is affected if Firefox (regular < 107.0 or ESR < 102.5) or Thunderbird < 102.5 is installed and the browser is used with ServiceWorker functionality.

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 102.5 / 107.0 or later
Fixed in 102.5107.0
Interim mitigation

Update affected products to Firefox >= 107, Firefox ESR >= 102.5, or Thunderbird >= 102.5. Organizations should ensure patch management deploys these browser updates to end users.

Recommended fix High confidence

Firefox 107.0, Firefox ESR 102.5, Thunderbird 102.5

  1. Check current browser version in Help > About Firefox or About Thunderbird
  2. Download Firefox 107.0 or later from www.mozilla.org
  3. Download Firefox ESR 102.5 or later from www.mozilla.org
  4. Download Thunderbird 102.5 or later from www.mozilla.org
  5. Install the updated version and restart the browser

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

Fix this in Firefox Scoped from the published advisory
  • Consultation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
3.0 hours of engineering $750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,200.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2022-45410 — 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-2022-45410 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