dbcve.org
Flexnet PublisherApplication · Flexerasoftware

CVE-2011-4134

HIGH · 10.0 CVSS v2.0 Published 2012-01-19
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
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
Heap-based buffer overflow in lmadmin in Flexera FlexNet Publisher 11.10 (aka FlexNet License Server Manager) allows remote attackers to execute arbitrary code via a crafted 0x2f packet.

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

Heap-based buffer overflow vulnerability in lmadmin component of Flexera FlexNet Publisher 11.10 allows remote attackers to execute arbitrary code via a specially crafted 0x2f network packet. The overflow occurs on the heap memory allocation, enabling potential complete system compromise.

MitigationApply vendor patch for CVE-2011-4134 if available; otherwise upgrade to a supported FlexNet Publisher version. If patching is not feasible, restrict network access to the license server and disable remote administration interfaces.

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
Flexnet PublisherApplication
Affected:= 11.10

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
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

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 if FlexNet Publisher is installed
    Check for FlexNet Publisher installation. On Windows, look in Program Files for 'Flexera Software' folder, or check registry key HKEY_LOCAL_MACHINE\SOFTWARE\Flexera Software\FlexNet Publisher. On Unix/Linux, check /opt/flexnet or /usr/local/flexnet directories and run 'lmutil -version' if available.
    Affected if FlexNet Publisher version 11.10 is installed on the system
  2. Verify the exact version number
    Locate the version of the FlexNet Publisher installation. Check the 'lmadmin' binary or 'lmgrd' daemon version using 'lmutil -version' or reviewing version information in the installation directory. The vendor documentation or installer properties may also list the version.
    Affected if The installed version is exactly 11.10 (the only affected version per this CVE)
  3. Confirm lmadmin component presence
    Check if the lmadmin administrative daemon component is installed and present on the system. Look for lmadmin executable in the installation bin directory (commonly C:\Program Files\Flexera Software\FlexNet Publisher\bin\lmadmin on Windows or /opt/flexnet/publisher/bin/lmadmin on Unix).
    Affected if lmadmin executable exists and is part of the FlexNet Publisher 11.10 installation
  4. Check if lmadmin service is running
    Identify whether the lmadmin service or daemon is actively running. On Windows, check Windows Services for 'FlexNet Publisher Administrator Service' or use 'sc query' command. On Unix, use 'ps aux | grep lmadmin' to find running processes.
    Affected if The lmadmin process is currently running, exposing the vulnerable packet handling code to network requests
  5. Assess network exposure
    Review network configuration to determine if lmadmin is reachable over the network. Check firewall rules, port listeners (lmadmin typically uses ports 27000-27009 range), and network ACLs. Use 'netstat -an' or equivalent to identify listening ports and their binding addresses (0.0.0.0 indicates exposed).
    Affected if The lmadmin service is listening on accessible network interfaces and accepting remote connections, enabling the specially crafted 0x2f packet to reach the vulnerable code

A system is affected if FlexNet Publisher version 11.10 is installed with the lmadmin component actively running and network-accessible, allowing specially crafted 0x2f network packets to reach the vulnerable heap overflow code.

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

Apply vendor patch for CVE-2011-4134 if available; otherwise upgrade to a supported FlexNet Publisher version. If patching is not feasible, restrict network access to the license server and disable remote administration interfaces.

Fix this in Flexnet Publisher Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2011-4134 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
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