CVE-2017-1786
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 · uneditedIBM WebSphere MQ 8.0 through 8.0.0.8 and 9.0 through 9.0.4 under special circumstances could allow an authenticated user to consume all resources due to a memory leak resulting in service loss. IBM X-Force ID: 136975.
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 confidenceIBM WebSphere MQ versions 8.0 through 8.0.0.8 and 9.0 through 9.0.4 contain a memory leak that can be triggered by an authenticated user under special circumstances. The vulnerability allows the attacker to continuously consume system resources until all available memory is exhausted, resulting in denial of service for legitimate users.
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>= 8.0, <= 8.0.0.8>= 9.0, <= 9.0.4CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/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 checksWork through these to decide whether this CVE applies to you.
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Determine installed IBM WebSphere MQ versionRun the command 'dspmqver' on the MQ server, or check the installation directory properties for version informationAffected if The version displayed falls within 8.0 through 8.0.0.8, or 9.0 through 9.0.4
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Identify MQ queue manager processesUse commands like 'ps -ef | grep mq' on Unix/Linux or check Windows services to locate running IBM WebSphere MQ queue manager processesAffected if Any queue manager is running on an affected version
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Monitor memory consumption of MQ processesUse system monitoring tools (top, ps, or Windows Task Manager) to observe the memory usage of amqzxma0, amqzmur0, and other IBM WebSphere MQ executable processes over timeAffected if Memory usage of MQ processes continuously grows without stabilizing, indicating a potential memory leak
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Review authenticated user session activityCheck MQ logs (typically in /var/mqm/log on Unix or C:\ProgramData\IBM\MQ\log on Windows) for patterns of authenticated user connections and resource consumptionAffected if Multiple authenticated sessions are observed correlating with unusual memory growth in MQ processes
If IBM WebSphere MQ version is 8.0 through 8.0.0.8 or 9.0 through 9.0.4 AND running queue managers show continuously increasing memory consumption, the environment is likely affected by this memory leak vulnerability.
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.
From vendor dataUpgrade IBM WebSphere MQ to a version beyond 8.0.0.8 or 9.0.4 that includes the fix, or apply the relevant IBM patch. Monitor resource usage and implement rate limiting for authenticated users as a temporary control.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-1786 — 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-2017-1786 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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