CVE-2017-14645
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 · uneditedA heap-based buffer over-read was discovered in AP4_BitStream::ReadBytes in Codecs/Ap4BitStream.cpp in Bento4 version 1.5.0-617. The vulnerability causes an application crash, which leads to remote denial of service.
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 heap-based buffer over-read vulnerability exists in the AP4_BitStream::ReadBytes function in Bento4 version 1.5.0-617. The vulnerability occurs when parsing specially crafted media files, allowing an attacker to read beyond allocated heap memory boundaries, causing an application crash and resulting in denial of service.
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= 1.5.0-617CVSS 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 Bento4 is present in the environmentSearch for Bento4 binaries, libraries, or applications that use Bento4 code. Common binary names include 'mp4info', 'mp4extract', 'mp4dump', or look for libbento4 shared libraries. On Linux: `find /usr -name '*bento4*' 2>/dev/null` or `ldconfig -p | grep -i bento`. On Windows: search Program Files for bento4-related executables or DLLs.Affected if Bento4 software or libraries are found in the environment
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Determine the installed Bento4 versionRun the bento4 utility with version flag: `mp4info --version` or `mp4extract --version`. If using as a library, check the shared library version or examine any version file included with the package. Compare the discovered version string against 1.5.0-617.Affected if The reported version is exactly 1.5.0-617
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Verify if media file processing is occurringIdentify any applications, scripts, or services that parse MP4 or other media files using Bento4. Check for file upload functionality, media conversion pipelines, or automated processing of user-submitted content. Review application logs or configuration for media file handling.Affected if The environment processes MP4 or media files, especially from untrusted sources
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Check for vulnerable code path in custom buildsIf Bento4 is built from source or embedded in a custom application, examine the source code for the AP4_BitStream::ReadBytes function. Search for calls to ReadBytes that handle size parameters from untrusted input without proper bounds checking.Affected if Custom Bento4 code or embedded builds are in use and the ReadBytes function handles untrusted input
A user is affected if Bento4 version 1.5.0-617 is installed AND the system processes MP4/media files, particularly from untrusted or external 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 dataUsers should upgrade to a patched version of Bento4 or apply vendor-supplied patches. Until then, implement input validation to reject malformed MP4/media files before processing them with the vulnerable library.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-14645 — 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-2017-14645 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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- Version or environment caveats, and links to real fixes
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