CVE-2017-12922
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 · uneditedwchar.c in libfpx 1.3.1_p6 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted fpx image.
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 confidenceA NULL pointer dereference vulnerability exists in wchar.c of libfpx 1.3.1_p6. When parsing a specially crafted FPX (FlashPix) image file, the code fails to properly handle a NULL pointer, leading to 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= 1.3.1CVSS 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
- 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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Check if libfpx library is installedSearch for libfpx files on the system. Common locations include /usr/lib/, /usr/local/lib/, or check via package manager (dpkg -l | grep libfpx, rpm -qa | grep libfpx)Affected if libfpx library version 1.3.1 is found on the system
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Identify applications using libfpxSearch for binaries or applications that link against libfpx by checking ldd output on suspected image processing tools, or search for 'fpx' or 'libfpx' references in application dependenciesAffected if Any application that processes FPX/FlashPix images is linked to libfpx 1.3.1
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Verify FPX file processing capabilityCheck if image viewers, converters, or graphics applications on the system have the ability to process FPX files. Review application documentation or test with a benign FPX file if availableAffected if The environment contains tools capable of opening FPX files and those tools use the vulnerable libfpx library
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Review application logs for crashesExamine system logs (syslog, dmesg) or application-specific logs for any NULL pointer dereference errors, segmentation faults, or crashes related to image processingAffected if Crashes occur when processing FPX files and error messages reference wchar.c or NULL pointer operations in libfpx
You are affected if libfpx version 1.3.1 is installed and any application on your system uses it to process FPX (FlashPix) image files.
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 dataUpdate libfpx to a patched version if available, or implement input validation to reject malformed fpx files before processing. Alternatively, avoid processing untrusted FPX files.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 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 $2,512.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-12922 — 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-2017-12922 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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