FedoraOperating system · Fedoraproject
CVE-2015-8808
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 DecodeImage function in coders/gif.c in GraphicsMagick 1.3.18 allows remote attackers to cause a denial of service (uninitialized memory access) via a crafted GIF 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 · high confidenceThe DecodeImage function in GraphicsMagick 1.3.18 (coders/gif.c) fails to properly initialize memory before use when processing GIF files, leading to an uninitialized memory access vulnerability. A remote attacker can trigger a denial of service by providing a specially crafted GIF file that causes the application to read uninitialized memory.
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
FedoraOperating system
= 22<= 1.3.17= 11= 1.3= 11CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:L/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 GraphicsMagick versionRun 'gm version' or 'graphicsmagick --version' to determine the installed version numberAffected if The installed version is 1.3.17 or earlier, or falls within the affected Fedora 22 or SUSE ranges (SUSE Studio Onsite 1.3, SUSE Linux Enterprise Debuginfo 11)
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Confirm GIF coder is presentRun 'gm identify -list configure' or check for the GIF decoder module (coders/gif.c) in the GraphicsMagick installationAffected if The GIF coder module exists and is available for use
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Verify GIF processing capabilityRun 'gm identify -list format' to confirm GIF read support is enabledAffected if GIF format support (Read GIF) is listed as supported in the GraphicsMagick build
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Test GIF processing triggers the conditionAttempt to decode a GIF file using 'gm convert input.gif output.png' or 'gm identify input.gif'Affected if The command executes and processes a GIF file, potentially exposing the uninitialized memory read during DecodeImage operation
You are affected if GraphicsMagick version 1.3.17 or earlier is installed AND GIF file processing functionality is enabled and used.
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 to GraphicsMagick version 1.3.23 or later, which contains the fix for this uninitialized memory read. If immediate patching is not possible, validate all GIF input through a secondary tool before processing with GraphicsMagick.
Fix this in Fedora
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,128.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-8808 — 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-2015-8808 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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