CVE-2023-1385
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 · uneditedImproper JPAKE implementation allows offline PIN brute-forcing due to the initialization of random values to a known value, which leads to unauthorized authentication to amzn.lightning services. This issue affects: Amazon Fire TV Stick 3rd gen versions prior to 6.2.9.5. Insignia TV with FireOS 7.6.3.3.
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 confidenceThe JPAKE (Password-Authenticated Key Exchange) implementation on affected Amazon Fire devices initializes cryptographic random values to a known constant instead of generating proper entropy. This allows an attacker who intercepts the authentication exchange to perform offline brute-forcing of the PIN, ultimately gaining unauthorized access to amzn.lightning services.
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< 6.2.9.5< 7.6.3.3CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify Amazon Fire deviceConfirm the device is an Amazon Fire TV Stick, Fire TV Cube, or Insignia TV running Fire OS. Check device model in Settings > My Fire TV > About or on the device packaging.Affected if Device is not an Amazon Fire OS device - not affected by this CVE.
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Check Fire OS versionNavigate to Settings > My Fire TV > About on the Fire device and look for the Software Version number. Compare against affected ranges: versions below 6.2.9.5 or below 7.6.3.3 are vulnerable.Affected if Fire OS version is below 6.2.9.5 (for Fire Stick 3rd gen and similar) or below 7.6.3.3 (for Insignia TVs) - device is affected.
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Verify JPAKE authentication in useThis vulnerability affects the amzn.lightning service which uses JPAKE for PIN-based authentication. On affected versions, the service will attempt JPAKE key exchange during authentication.Affected if Device runs a vulnerable Fire OS version and uses the amzn.lightning service for authentication - the known-constant entropy flaw is present in the JPAKE implementation.
User is affected if the Amazon Fire device runs Fire OS version below 6.2.9.5 or below 7.6.3.3 and uses the amzn.lightning JPAKE authentication service.
Generated from the published advisory. Verify against your own configuration.
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 · scoped6.2.9.57.6.3.3
Update Amazon Fire TV Stick 3rd gen to version 6.2.9.5 or later, and Insignia TVs with FireOS to version 7.6.3.3 or later. Users should apply vendor firmware updates as soon as they become available.
Fire OS 6.2.9.5 or higher for Fire TV Stick 3rd gen; Fire OS 7.6.3.3 or higher for Insignia TV with FireOS
- 1. Navigate to Settings on your Amazon Fire TV device
- 2. Go to My Fire TV or Device & Software (depending on OS version)
- 3. Select About
- 4. Select Fire TV or System Update
- 5. Check current OS version and confirm it is below 6.2.9.5 (for Fire TV Stick 3rd gen) or below 7.6.3.3 (for Insignia TV with FireOS)
- 6. Select Check for Updates or Install Update to download and install the security patch
- 7. Verify the update installed successfully by checking the OS version again
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation40.0 h
- Testing16.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-1385 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-1385 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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