Debian LinuxOperating system · Debian
CVE-2018-5294
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 · uneditedIn libming 0.4.8, there is an integer overflow (caused by an out-of-range left shift) in the readUInt32 function (util/read.c). Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted swf file.
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 confidenceInteger overflow vulnerability in libming 0.4.8's readUInt32 function (util/read.c) caused by an out-of-range left shift operation. When parsing a specially crafted SWF file, the overflow can trigger a denial-of-service condition.
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
Debian LinuxOperating system
= 7.0= 0.4.8CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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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Identify if libming library is installedRun 'dpkg -l | grep libming' (Debian) or check for libming shared library files in system paths like /usr/lib/ or /usr/local/lib/Affected if libming library files exist on the system
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Determine installed libming versionRun 'dpkg -l libming' or check library version via 'strings' on libming binary files, or query the package manager for the exact version numberAffected if version matches 0.4.8 exactly (or if version cannot be determined but libming is present)
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Identify applications or services that use libmingSearch for compiled binaries or scripts that link against libming: run 'ldd $(which <application>) 2>/dev/null | grep ming' or check /usr/bin/ and /usr/sbin/ for utilities that process SWF filesAffected if any program on the system is configured to parse SWF files using libming
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Check for SWF file processing activityReview any log files, cron jobs, or services that process SWF files from external or untrusted sourcesAffected if SWF files are being parsed by libming-based tools on the system
User is affected if libming version 0.4.8 is installed AND any application on the system uses it to parse SWF files, particularly from untrusted sources.
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 dataProcess only SWF files from trusted sources; apply any available vendor patch for libming to address the integer overflow in readUInt32.
Fix this in Debian Linux
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,096.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-5294 — 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-2018-5294 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
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