Cs31x FirmwareOperating system · Lexmark

CVE-2019-10059

MEDIUM · 5.3 CVSS v3.0 Published 2019-08-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
62/100
Remediation priority · Elevated
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
The legacy finger service (TCP port 79) is enabled by default on various older Lexmark devices.

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

The legacy finger service on TCP port 79 is enabled by default on older Lexmark devices. This service can expose user account information such as usernames and potentially other system details to unauthenticated remote attackers on the network.

MitigationDisable the finger service on affected devices via the administrative interface, or block TCP port 79 at the network perimeter to prevent external access.

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
Cs31x FirmwareOperating system
Affected:<= lw71.vyl.p233
Cs41x FirmwareOperating system
Affected:<= lw71.vy2.p233
Cx310 FirmwareOperating system
Affected:<= lw71.gm2.p233
Ms310 FirmwareOperating system
Affected:<= lw71.prl.p233
Ms312 FirmwareOperating system
Affected:<= lw71.prl.p233
Ms317 FirmwareOperating system
Affected:<= lw71.prl.p233
Ms410 FirmwareOperating system
Affected:<= lw71.prl.p233
M1140 FirmwareOperating system
Affected:<= lw71.prl.p233

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
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 the Lexmark device model
    Access the device web interface or check the network inventory to determine the exact model number (Cs31x, Cs41x, Cx310, Ms310, Ms312, Ms317, Ms410, or M1140)
    Affected if The device model is one of the affected models listed in the CVE
  2. Check the installed firmware version
    Log into the device administrative interface and navigate to the firmware or version information page, or use the embedded web server status page to retrieve the firmware build string (such as lw71.vyl.p233, lw71.vy2.p233, lw71.gm2.p233, or lw71.prl.p233)
    Affected if The firmware version is at or below the specified version for your model (e.g., lw71.prl.p233 for Ms310/Ms312/Ms317/Ms410/M1140)
  3. Verify TCP port 79 is listening
    Use a network port scanner (such as nmap) or netcat to check if port 79 is open on the device IP address: nmap -p 79 <device_ip> or nc -zv <device_ip> 79
    Affected if TCP port 79 returns as open or filtered on the device
  4. Test the finger service response
    Connect to port 79 using a finger client or telnet: telnet <device_ip> 79 or echo "" | nc <device_ip> 79 and observe if user account information or system details are returned
    Affected if The service responds with user account data or system information without authentication

The device is affected if it is one of the listed models, runs firmware at or below the specified version, and TCP port 79 is open and responds with user information.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Disable the finger service on affected devices via the administrative interface, or block TCP port 79 at the network perimeter to prevent external access.

Fix this in Cs31x Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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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-2019-10059 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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