CVE-2015-1942
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 · uneditedThe server in IBM Tivoli Storage Manager FastBack 6.1 before 6.1.12 allows remote attackers to write to arbitrary files, and subsequently execute these files, via a crafted TCP packet to an unspecified port.
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 confidenceIBM Tivoli Storage Manager FastBack 6.1 before version 6.1.12 contains a vulnerability allowing remote attackers to write arbitrary files to the filesystem via crafted TCP packets to an unspecified port. Combined with the ability to subsequently execute these written files, this constitutes a remote code execution vulnerability.
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= 6.1.0.0= 6.1.1.0= 6.1.7.2= 6.1.8.0= 6.1.8.1= 6.1.9.0= 6.1.9.1= 6.1.10.0= 6.1.10.1= 6.1.11.0= 6.1.11.1CVSS 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
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/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 checksWork through these to decide whether this CVE applies to you.
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Confirm IBM Tivoli Storage Manager FastBack is installedLocate the FastBack installation directory or check installed programs on the system. Typical installation paths may include C:\Program Files\IBM\Tivoli\TSM\FastBack or similar. Look for the fbmaster.exe or fbservice.exe processes running as services.Affected if The software is present on the system.
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Determine the installed versionCheck the version of the installed IBM Tivoli Storage Manager FastBack. Right-click on the executable or check the product version through the Windows registry under HKLM\SOFTWARE\IBM\Tivoli Storage Manager\FastBack\CurrentVersion, or run: fbmaster -version from the installation bin directory.Affected if The installed version matches one of these: 6.1.0.0, 6.1.1.0, 6.1.7.2, 6.1.8.0, 6.1.8.1, 6.1.9.0, 6.1.9.1, 6.1.10.0, 6.1.10.1, 6.1.11.0, 6.1.11.1, or any version below 6.1.12.
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Identify listening TCP portsUse netstat -an or PowerShell Get-NetTCPConnection to list all TCP ports in LISTENING state. Identify which ports the FastBack services are bound to. Look for any unexpected or undocumented ports associated with FastBack processes.Affected if FastBack services are listening on any TCP port and the version is vulnerable.
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Audit file system for suspicious newly created filesReview the FastBack installation directory and any directories writable by the FastBack service account. Check for unexpected .exe, .dll, .bat, .cmd, or script files that were created recently, especially in directories where the service has write permissions.Affected if Unexpected executable or script files are found that were not originally part of the installation.
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Review network connections for suspicious outbound trafficMonitor network connections using netstat -anf or a network monitoring tool. Look for outbound connections from FastBack processes to unknown or unexpected external IP addresses, particularly on high or unusual ports.Affected if FastBack processes are establishing connections to unfamiliar external hosts.
The system is affected if IBM Tivoli Storage Manager FastBack version 6.1.12 or later is NOT installed and the vulnerable TCP service is exposed 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 · scopedUpgrade IBM Tivoli Storage Manager FastBack to version 6.1.12 or later. Until patched, restrict network access to the affected server and monitor for suspicious TCP traffic to unknown ports.
IBM Tivoli Storage Manager FastBack 6.1.12 or later
- Verify current IBM Tivoli Storage Manager FastBack version by checking the installed build number
- Review the IBM Tivoli Storage Manager FastBack 6.1.12 release notes for changes, prerequisites, and migration considerations
- Create a complete backup of the current TSM FastBack configuration and data
- Schedule a maintenance window as the upgrade may require service interruption
- Download IBM Tivoli Storage Manager FastBack version 6.1.12 or later from IBM Fix Central or your authorized IBM distribution channel
- Stop all TSM FastBack services before applying the upgrade
- Install the upgraded version (6.1.12 or later) following IBM's installation documentation
- Verify the upgrade was successful by checking the new version number
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-2015-1942 — 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-2015-1942 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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