CVE-2023-6230
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 · uneditedBuffer overflow in the Address Book password process in authentication of Mobile Device Function of Office Multifunction Printers and Laser Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code.*: Satera LBP670C Series/Satera MF750C Series firmware v03.07 and earlier sold in Japan. Color imageCLASS LBP674C/Color imageCLASS X LBP1333C/Color imageCLASS MF750C Series/Color imageCLASS X MF1333C Series firmware v03.07 and earlier sold in US. i-SENSYS LBP673Cdw/C1333P/i-SENSYS MF750C Series/C1333i Series firmware v03.07 and earlier sold in Europe.
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 confidenceA buffer overflow vulnerability exists in the Address Book password processing within the Mobile Device Function authentication of Canon Satera, Color imageCLASS, and i-SENSYS printer firmware v03.07 and earlier. An attacker on the same network segment can exploit this flaw to cause device unresponsiveness (Denial of Service) or achieve arbitrary code execution, potentially compromising the printer's operation.
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<= 03.07<= 03.07<= 03.07<= 03.07<= 03.07<= 03.07<= 03.07<= 03.07CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 printer modelCheck the printer model label or access the printer's web interface (embedded web server) to confirm the exact model number matches one of the affected models: Mf755cdw, Mf753cdw, Mf751cdw, Lbp674c, Lbp672c, Lbp671c, Mf1238 Ii, or Mf1333cAffected if The printer model is one of the listed affected models
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Check firmware versionAccess the printer's web interface (EWS) and navigate to the Firmware Information or Device Settings section to view the installed firmware version, or print a configuration page from the device menuAffected if The installed firmware version is v03.07 or earlier (e.g., v03.05, v03.06, v03.07)
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Verify Mobile Device Function statusAccess the printer's web interface and locate the Mobile Device Function or Mobile Printing settings (often under Network, Wireless, or Device Settings). Confirm whether this feature is enabled.Affected if The Mobile Device Function is enabled and accessible on the network
A user is affected if their Canon printer model matches one of the eight listed models, the firmware version is 03.07 or earlier, and the Mobile Device Function is enabled on the network.
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 · scopedUpdate affected printer firmware to a version newer than v03.07 as provided by Canon. If immediate patching is not feasible, isolate affected devices on a restricted network segment and disable the Mobile Device Function if not required to reduce attack surface.
Firmware version newer than v03.07 (specific fixed version number not specified in available sources)
- 1. Identify the exact model number of the Canon printer from the affected product list (Mf755cdw, Mf753cdw, Mf751cdw, Lbp674c, Lbp672c, Lbp671c, Mf1238 Ii, or Mf1333c)
- 2. Access the Canon support website for your region (canon.jp, www.usa.canon.com, or www.canon-europe.com depending on where the device was purchased)
- 3. Navigate to the product support page for your specific printer model
- 4. Locate the firmware download section and check for any firmware version newer than v03.07
- 5. Download the latest available firmware version for your model
- 6. Follow Canon's firmware update instructions, typically involving uploading the firmware file through the printer's web interface or using the Canon firmware update utility
- 7. Verify the firmware has been updated successfully by checking the firmware version in the printer's web interface or control panel
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-6230 — 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-2023-6230 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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