dbcve.org
RumbaApplication · Microfocus

CVE-2016-1606

CRITICAL · 9.8 CVSS v3.0 Published 2016-07-03
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
Multiple stack-based buffer overflows in COM objects in Micro Focus Rumba 9.4.x before 9.4 HF 13960 allow remote attackers to execute arbitrary code via (1) the NetworkName property value to ObjectXSNAConfig.ObjectXSNAConfig in iconfig.dll, (2) the CPName property value to ObjectXSNAConfig.ObjectXSNAConfig in iconfig.dll, (3) the PrinterName property value to ProfileEditor.PrintPasteControl in ProfEdit.dll, (4) the Data argument to the WriteRecords function in FTXBIFFLib.AS400FtxBIFF in FtxBIFF.dll, (5) the Serialized property value to NMSECCOMPARAMSLib.SSL3 in NMSecComParams.dll, (6) the UserName property value to NMSECCOMPARAMSLib.FirewallProxy in NMSecComParams.dll, (7) the LUName property value to ProfileEditor.MFSNAControl in ProfEdit.dll, (8) the newVal argument to the Load function in FTPSFTPLib.SFtpSession in FTPSFtp.dll, or (9) a long Host field in the FTP Client.

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

Multiple stack-based buffer overflow vulnerabilities exist in COM objects within Micro Focus Rumba 9.4.x before 9.4 HF 13960 across nine different DLLs and COM interfaces (iconfig.dll, ProfEdit.dll, FtxBIFF.dll, NMSecComParams.dll, FTPSFtp.dll). Attackers can execute arbitrary code by passing oversized values to properties like NetworkName, CPName, PrinterName, Serialized, UserName, LUName, or arguments like Data and newVal, or via the FTP Client Host field.

MitigationApply Micro Focus Rumba version 9.4 HF 13960 or later to address all nine buffer overflow vulnerabilities in the affected COM objects; until patched, restrict network access to Rumba services and disable unnecessary COM object 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
RumbaApplication
Affected:= 9.4

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
High
Integrity
High
Availability
High

CVSS:3.0/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 checks

Work through these to decide whether this CVE applies to you.

  1. Detect if Rumba is installed
    Check for Rumba installation directory (typically in Program Files or Program Files (x86)), or look for rumba.exe process running, or check registry under HKLM\SOFTWARE\Micro Focus or HKLM\SOFTWARE\Wow6432Node\Micro Focus for Rumba entries
    Affected if Rumba is not found on the system, so the CVE does not apply
  2. Identify installed Rumba version
    Right-click on rumba.exe in the installation directory, select Properties, and check the File Version field; alternatively, check the Windows registry under the Rumba installation key for a Version value
    Affected if Version is 9.4.x and is earlier than 9.4 HF 13960, indicating the system may be vulnerable
  3. Verify presence of affected DLLs
    Check the Rumba installation directory for the presence of these DLLs: iconfig.dll, ProfEdit.dll, FtxBIFF.dll, NMSecComParams.dll, FTPSFtp.dll
    Affected if Any of these five DLLs exist in the Rumba directory, the COM objects they contain could be exploitable if the version is unpatched
  4. Confirm COM objects are accessible
    Open Component Services (comexp.msc) or use regedit to check registry under HKCR\CLSID for CLSIDs associated with these DLLs, or attempt to instantiate the COM objects via a script (e.g., CreateObject in VBScript)
    Affected if The COM objects can be instantiated and the installed version is unpatched, the buffer overflow conditions exist

A system is affected if Micro Focus Rumba 9.4 is installed with a version earlier than 9.4 HF 13960 and any of the five affected DLLs (iconfig.dll, ProfEdit.dll, FtxBIFF.dll, NMSecComParams.dll, FTPSFtp.dll) are present with accessible COM interfaces.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply Micro Focus Rumba version 9.4 HF 13960 or later to address all nine buffer overflow vulnerabilities in the affected COM objects; until patched, restrict network access to Rumba services and disable unnecessary COM object interfaces.

Recommended fix Moderate confidence

Rumba 9.4 HF 13960 or later

  1. Identify the current installed version of Micro Focus Rumba
  2. Download hotfix HF 13960 or later from Micro Focus official support portal
  3. Apply the hotfix according to Micro Focus installation instructions
  4. Restart any Rumba services if required
  5. Verify the version now shows 9.4 HF 13960 or later

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

Fix this in Rumba Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA3.0 h
20.0 hours of engineering $3,420
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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-2016-1606 in production — separate from our analysis above.

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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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