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Tivoli Storage Manager FastbackApplication · Ibm

CVE-2015-4933

HIGH · 10.0 CVSS v2.0 Published 2015-08-03
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

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
Stack-based buffer overflow in the server in IBM Tivoli Storage Manager FastBack 6.1 before 6.1.12.1 allows remote attackers to execute arbitrary code via a crafted packet, a different vulnerability than CVE-2015-4931, CVE-2015-4932, CVE-2015-4934, and CVE-2015-4935.

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

Stack-based buffer overflow in IBM Tivoli Storage Manager FastBack server allows remote attackers to execute arbitrary code via a crafted packet. The vulnerability affects versions 6.1 before 6.1.12.1 and has a CVSS score of 10, indicating critical severity with remote code execution capability.

MitigationUpgrade IBM Tivoli Storage Manager FastBack to version 6.1.12.1 or later to remediate this vulnerability. If immediate patching is not possible, consider network segmentation to restrict access to the FastBack server.

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
Tivoli Storage Manager FastbackApplication
Affected:= 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

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. Verify IBM Tivoli Storage Manager FastBack is installed
    On Windows, check for the FastBack server installation directory (typically C:\Program Files\IBM\Tivoli\TSM\FastBack or similar). On Linux/Unix, check /opt/IBM/Tivoli/TSM/FastBack or the installation directory used. Also check Windows Services or Unix processes for 'TSM FastBack' or 'FastBack Server' services.
    Affected if The product is not present on the system, then the system is not affected.
  2. Identify the installed FastBack server version
    Check the version file in the installation directory, typically named version.txt, ver.txt, or similar. On Windows, you can also right-click the server executable and view Properties > Details. The version may also be visible in the Windows Services description or via the FastBack server console.
    Affected if You cannot determine the version, further investigation is needed.
  3. Compare installed version against affected range
    The affected versions are 6.1.0.0 through 6.1.11.1 (all versions before 6.1.12.1). If your installed version is 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, or 6.1.11.1, you are affected. Also treat any 6.1.x.x version below 6.1.12.1 as affected.
    Affected if Installed version is 6.1.x.x where x is any build before 6.1.12.1.
  4. Determine if FastBack server is network accessible
    Check if the FastBack server port (default TCP port 11460 or as configured) is listening on network interfaces. Use netstat -an | grep 11460 or similar. Verify the server firewall rules and bindings to determine if it accepts remote connections.
    Affected if The server is exposed to untrusted networks and the version is within the affected range.

If IBM Tivoli Storage Manager FastBack server version is 6.1.x.x and is below 6.1.12.1, and the server is network-accessible, the environment is vulnerable to remote code execution via this CVE.

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
Patch available Apply the vendor patch
Vendor patch www-01.ibm.com →
Interim mitigation

Upgrade IBM Tivoli Storage Manager FastBack to version 6.1.12.1 or later to remediate this vulnerability. If immediate patching is not possible, consider network segmentation to restrict access to the FastBack server.

Recommended fix High confidence

IBM Tivoli Storage Manager FastBack 6.1.12.1 or later

  1. Download IBM Tivoli Storage Manager FastBack version 6.1.12.1 or later from IBM's support portal at www-01.ibm.com
  2. Review IBM's upgrade documentation for Tivoli Storage Manager FastBack
  3. Apply the upgrade following IBM's standard upgrade procedure
  4. Verify the installation was successful and the version is 6.1.12.1 or later

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

Fix this in Tivoli Storage Manager Fastback Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,380
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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-2015-4933 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data